Search results for 'Decoherence' (try it on Scholar)

203 found
Order:
  1. Elise M. Crull (2015). Less Interpretation and More Decoherence in Quantum Gravity and Inflationary Cosmology. Foundations of Physics 45 (9):1019-1045.
    I argue that quantum decoherence—understood as a dynamical process entailed by the standard formalism alone—carries us beyond conceptual aspects of non-relativistic quantum mechanics deemed insurmountable by many contributors to the recent quantum gravity and cosmology literature. These aspects include various incarnations of the measurement problem and of the quantum -to-classical puzzle. Not only can such problems be largely bypassed or dissolved without default to a particular interpretation, but theoretical work in relativistic arenas stands to gain substantial physical and philosophical (...)
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  2. Amit Hagar (2012). Decoherence: The View From the History and the Philosophy of Science. Phil. Trans. Royal Soc. London A 375 (1975).
    We present a brief history of decoherence, from its roots in the foundations of classical statistical mechanics, to the current spin bath models in condensed matter physics. We analyze the philosophical import of the subject matter in three different foundational problems, and find that, contrary to the received view, decoherence is less instrumental to their solutions than it is commonly believed. What makes decoherence more philosophically interesting, we argue, are the methodological issues it draws attention to, and (...)
    Direct download  
     
    Export citation  
     
    My bibliography  
  3.  5
    Elias Okon & Daniel Sudarsky (2016). Less Decoherence and More Coherence in Quantum Gravity, Inflationary Cosmology and Elsewhere. Foundations of Physics 46 (7):852-879.
    In Crull it is argued that, in order to confront outstanding problems in cosmology and quantum gravity, interpretational aspects of quantum theory can by bypassed because decoherence is able to resolve them. As a result, Crull concludes that our focus on conceptual and interpretational issues, while dealing with such matters in Okon and Sudarsky, is avoidable and even pernicious. Here we will defend our position by showing in detail why decoherence does not help in the resolution of foundational (...)
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  4.  7
    Hervé Zwirn (2016). The Measurement Problem: Decoherence and Convivial Solipsism. Foundations of Physics 46 (6):635-667.
    The problem of measurement is often considered an inconsistency inside the quantum formalism. Many attempts to solve it have been made since the inception of quantum mechanics. The form of these attempts depends on the philosophical position that their authors endorse. I will review some of them and analyze their relevance. The phenomenon of decoherence is often presented as a solution lying inside the pure quantum formalism and not demanding any particular philosophical assumption. Nevertheless, a widely debated question is (...)
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  5.  49
    M. Schlosshauer (2008). Classicality, the Ensemble Interpretation, and Decoherence: Resolving the Hyperion Dispute. [REVIEW] Foundations of Physics 38 (9):796-803.
    We analyze seemingly contradictory claims in the literature about the role played by decoherence in ensuring classical behavior for the chaotically tumbling satellite Hyperion. We show that the controversy is resolved once the very different assumptions underlying these claims are recognized. In doing so, we emphasize the distinct notions of the problem of classicality in the ensemble interpretation of quantum mechanics and in decoherence-based approaches that are aimed at addressing the measurement problem.
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography   1 citation  
  6.  4
    Sebastian Fortin, Olimpia Lombardi & Juan Camilo Martínez González (forthcoming). Isomerism and Decoherence. Foundations of Chemistry:1-16.
    In the present paper we address the problem of optical isomerism embodied in the socalled “Hund’s paradox”, which points to the difficulty to account for chirality by means of quantum mechanics. In particular, we explain the answer to the problem proposed by the theory of decoherence. The purpose of this article is to challenge this answer on the basis of a conceptual analysis of the phenomenon of decoherence, that reveals the limitations of the theory of decoherence to (...)
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  7.  10
    Mario Castagnino & Manuel Gadella (2006). The Problem of the Classical Limit of Quantum Mechanics and the Role of Self-Induced Decoherence. Foundations of Physics 36 (6):920-952.
    Our account of the problem of the classical limit of quantum mechanics involves two elements. The first one is self-induced decoherence, conceived as a process that depends on the own dynamics of a closed quantum system governed by a Hamiltonian with continuous spectrum; the study of decoherence is addressed by means of a formalism used to give meaning to the van Hove states with diagonal singularities. The second element is macroscopicity represented by the limit $\hbar \rightarrow 0$ : (...)
    Direct download (3 more)  
     
    Export citation  
     
    My bibliography   5 citations  
  8.  43
    Leslie Ballentine (2008). Classicality Without Decoherence: A Reply to Schlosshauer. [REVIEW] Foundations of Physics 38 (10):916-922.
    Schlosshauer has criticized the conclusion of Wiebe and Ballentine (Phys. Rev. A 72:022109, 2005) that decoherence is not essential for the emergence of classicality from quantum mechanics. I reply to the issues raised in his critique, which range from the interpretation of quantum mechanics to the criterion for classicality, and conclude that the role of decoherence in these issues is much more restricted than is often claimed.
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  9.  18
    Richard Healey (2012). Quantum Decoherence in a Pragmatist View: Dispelling Feynman's Mystery. [REVIEW] Foundations of Physics 42 (12):1534-1555.
    The quantum theory of decoherence plays an important role in a pragmatist interpretation of quantum theory. It governs the descriptive content of claims about values of physical magnitudes and offers advice on when to use quantum probabilities as a guide to their truth. The content of a claim is to be understood in terms of its role in inferences. This promises a better treatment of meaning than that offered by Bohr. Quantum theory models physical systems with no mention of (...)
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography   1 citation  
  10.  17
    Scott Tanona (2013). Decoherence and the Copenhagen Cut. Synthese 190 (16):3625-3649.
    While it is widely agreed that decoherence will not solve the measurement problem, decoherence has been used to explain the “emergence of classicality” and to eliminate the need for a Copenhagen edict that some systems simply have to be treated as classical via a quantum-classical “cut”. I argue that decoherence still relies on such a cut. Decoherence accounts derive classicality only in virtue of their incompleteness, by omission of part of the entangled system of which the (...)
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography   1 citation  
  11.  7
    Sayantani Bera, Sandro Donadi, Kinjalk Lochan & Tejinder P. Singh (2015). A Comparison Between Models of Gravity Induced Decoherence. Foundations of Physics 45 (12):1537-1560.
    It has been suggested in the literature that spatial coherence of the wave function can be dynamically suppressed by fluctuations in the spacetime geometry. These fluctuations represent the minimal uncertainty that is present when one probes spacetime geometry with a quantum probe. Two similar models have been proposed, one by Diósi and one by Karolyhazy and collaborators, based on apparently unrelated minimal spacetime bounds. The two models arrive at somewhat different expressions for the dependence of the localization coherence length on (...)
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  12.  23
    Sam Kennerly (2012). Illusory Decoherence. Foundations of Physics 42 (9):1200-1209.
    Suppose a quantum experiment includes one or more random processes. Then the results of repeated measurements may appear consistent with irreversible decoherence even if the system’s evolution prior to measurement is reversible and unitary. Two thought experiments are constructed as examples.
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  13.  17
    Sebastian Fortin & Leonardo Vanni (2014). Quantum Decoherence: A Logical Perspective. Foundations of Physics 44 (12):1258-1268.
    The so-called classical limit of quantum mechanics is generally studied in terms of the decoherence of the state operator that characterizes a system. This is not the only possible approach to decoherence. In previous works we have presented the possibility of studying the classical limit in terms of the decoherence of relevant observables of the system. On the basis of this approach, in this paper we introduce the classical limit from a logical perspective, by studying the way (...)
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  14.  11
    Ed Seidewitz (2007). The Universe as an Eigenstate: Spacetime Paths and Decoherence. [REVIEW] Foundations of Physics 37 (4-5):572-596.
    This paper describes how the entire universe might be considered an eigenstate determined by classical limiting conditions within it. This description is in the context of an approach in which the path of each relativistic particle in spacetime represents a fine-grained history for that particle, and a path integral represents a coarse-grained history as a superposition of paths meeting some criteria. Since spacetime paths are parametrized by an invariant parameter, not time, histories based on such paths do not evolve in (...)
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography   1 citation  
  15.  16
    Vincent Corbin & Neil J. Cornish (2009). Semi-Classical Limit and Minimum Decoherence in the Conditional Probability Interpretation of Quantum Mechanics. Foundations of Physics 39 (5):474-485.
    The Conditional Probability Interpretation of Quantum Mechanics replaces the abstract notion of time used in standard Quantum Mechanics by the time that can be read off from a physical clock. The use of physical clocks leads to apparent non-unitary and decoherence. Here we show that a close approximation to standard Quantum Mechanics can be recovered from conditional Quantum Mechanics for semi-classical clocks, and we use these clocks to compute the minimum decoherence predicted by the Conditional Probability Interpretation.
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  16.  11
    Roland Omnès (2011). Decoherence and Wave Function Collapse. Foundations of Physics 41 (12):1857-1880.
    The possibility of consistency between the basic quantum principles of quantum mechanics and wave function collapse is reexamined. A specific interpretation of environment is proposed for this aim and is applied to decoherence. When the organization of a measuring apparatus is taken into account, this approach leads also to an interpretation of wave function collapse, which would result in principle from the same interactions with environment as decoherence. This proposal is shown consistent with the non-separable character of quantum (...)
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  17.  8
    Sebastian Fortin & Olimpia Lombardi (2014). Partial Traces in Decoherence and in Interpretation: What Do Reduced States Refer To? Foundations of Physics 44 (4):426-446.
    The interpretation of the concept of reduced state is a subtle issue that has relevant consequences when the task is the interpretation of quantum mechanics itself. The aim of this paper is to argue that reduced states are not the quantum states of subsystems in the same sense as quantum states are states of the whole composite system. After clearly stating the problem, our argument is developed in three stages. First, we consider the phenomenon of environment-induced decoherence as an (...)
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  18.  2
    Cisco Gooding & William G. Unruh (2015). Bootstrapping Time Dilation Decoherence. Foundations of Physics 45 (10):1166-1178.
    We present a general relativistic model of a spherical shell of matter with a perfect fluid on its surface coupled to an internal oscillator, which generalizes a model recently introduced by the authors to construct a self-gravitating interferometer. The internal oscillator evolution is defined with respect to the local proper time of the shell, allowing the oscillator to serve as a local clock that ticks differently depending on the shell’s position and momentum. A Hamiltonian reduction is performed on the system, (...)
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  19.  5
    Francesco De Martini, Fabio Sciarrino, Nicolò Spagnolo & Chiara Vitelli (2011). Generation of Highly Resilient to Decoherence Macroscopic Quantum Superpositions Via Phase-Covariant Quantum Cloning. Foundations of Physics 41 (3):492-508.
    In this paper we analyze the resilience to decoherence of the Macroscopic Quantum Superpositions (MQS) generated by optimal phase-covariant quantum cloning according to two coherence criteria, both based on the concept of Bures distance in Hilbert spaces. We show that all MQS generated by this system are characterized by a high resilience to decoherence processes. This analysis is supported by the results of recent MQS experiments of N=3.5×104 particles.
    Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  20.  4
    Valia Allori (2002). Decoherence and the Classical Limit of Quantum Mechanics. Dissertation, University of Genova, Italy
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  21.  17
    Sebastian Fortin, Olimpia Lombardi & Juan Camilo Martínez González, Isomerism and Decoherence.
    In the present paper we address the problem of optical isomerism embodied in the socalled “Hund’s paradox”, which points to the difficulty to account for chirality by means of quantum mechanics. In particular, we explain the answer to the problem proposed by the theory of decoherence. The purpose to this article is to challenge this answer on the basis of a conceptual analysis of the phenomenon of decoherence, that reveals the limitations of the theory of decoherence to (...)
    No categories
    Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  22.  53
    Guido Bacciagaluppi, The Role of Decoherence in Quantum Mechanics. Stanford Encyclopedia of Philosophy.
    Interference phenomena are a well-known and crucial feature of quantum mechanics, the two-slit experiment providing a standard example. There are situations, however, in which interference effects are (artificially or spontaneously) suppressed. We shall need to make precise what this means, but the theory of decoherence is the study of (spontaneous) interactions between a system and its environment that lead to such suppression of interference. This study includes detailed modelling of system-environment interactions, derivation of equations (‘master equations’) for the (reduced) (...)
    Direct download  
     
    Export citation  
     
    My bibliography   18 citations  
  23. Michael B. Mensky (1997). Decoherence in Continuous Measurements: From Models to Phenomenology. [REVIEW] Foundations of Physics 27 (12):1637-1654.
    Decoherence is the name for the complex of phenomena leading to appearance of classical features of quantum systems. In the present paper decoherence in continuous measurements is analyzed with the help of restricted path integrals (RPI) and (equivalently in simple cases) complex Hamiltonians. A continuous measurement results in a readout giving information in the classical form on the evolution of the measured quantum system. The quantum features of the system reveal themselves in the variation of possible measurement readouts. (...)
    Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  24. Meir Hemmo & Orly Shenker (2003). Quantum Decoherence and the Approach to Equilibrium. Philosophy of Science 70 (2):330-358.
    We discuss a recent proposal by Albert (1994a; 1994b; 2000, ch. 7) to recover thermodynamics on a purely dynamical basis, using the quantum theory of the collapse of the wave function by Ghirardi, Rimini, and Weber (1986). We propose an alternative way to explain thermodynamics within no-collapse interpretations of quantum mechanics. Our approach relies on the standard quantum mechanical models of environmental decoherence of open systems (e.g., Joos and Zeh 1985; Zurek and Paz 1994). This paper presents the two (...)
    Direct download (13 more)  
     
    Export citation  
     
    My bibliography   7 citations  
  25.  8
    David Wallace (2010). Decoherence and Ontology. In Simon Saunders, Jonathan Barrett, Adrian Kent & David Wallace (eds.), Many Worlds?: Everett, Quantum Theory, & Reality. OUP Oxford
    I make the case that the Universe according to unitary quantum theory has a branching structure, and so can literally be regarded as a "many-worlds" theory. These worlds are not part of the _fundamental_ ontology of quantum theory - instead, they are to be understood as structures, or patterns, emergent from the underlying theory, through the dynamical process of decoherence. That they are structures in this sense does not mean that they are in any way unreal: indeed, pretty much (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography   3 citations  
  26.  5
    David Wallace, Decoherence and its Role in the Modern Measurement Problem.
    Decoherence is widely felt to have something to do with the quantum measurement problem, but getting clear on just what is made diffcult by the fact that the "measurement problem", as traditionally presented in foundational and philosophical discussions, has become somewhat disconnected from the conceptual problems posed by real physics. This, in turn, is because quantum mechanics as discussed in textbooks and in foundational discussions has become somewhat removed from scientific practice, especially where the analysis of measurement is concerned. (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography   3 citations  
  27. Guido Bacciagaluppi (2007). Probability, Arrow of Time and Decoherence. Studies in History and Philosophy of Science Part B 38 (2):439-456.
    This paper relates both to the metaphysics of probability and to the physics of time asymmetry. Using the formalism of decoherent histories, it investigates whether intuitions about intrinsic time directedness that are often associated with probability can be justified in the context of no-collapse approaches to quantum mechanics. The standard (two-vector) approach to time symmetry in the decoherent histories literature is criticised, and an alternative approach is proposed, based on two decoherence conditions ('forwards' and 'backwards') within the one-vector formalism. (...)
    Direct download (7 more)  
     
    Export citation  
     
    My bibliography   1 citation  
  28.  83
    Meir Hemmo & Orly Shenker (2001). Can We Explain Thermodynamics By Quantum Decoherence? Studies in History and Philosophy of Science Part B 32 (4):555-568.
    Can we explain the laws of thermodynamics, in particular the irreversible increase of entropy, from the underlying quantum mechanical dynamics? Attempts based on classical dynamics have all failed. Albert (1994a,b; 2000) proposed a way to recover thermodynamics on a purely dynamical basis, using the quantum theory of the collapse of the wavefunction of Ghirardi, Rimini and Weber (1986). In this paper we propose an alternative way to explain thermodynamics within no-collapse interpretations of quantum mechanics. Our approach relies on the standard (...)
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography   5 citations  
  29.  11
    Simon Saunders (1993). Decoherence, Relative States, and Evolutionary Adaptation. Foundations of Physics 23 (12):1553-1585.
    We review the decoherent histories approach to the interpretation of quantum mechanics. The Everett relative-state theory is reformulated in terms of decoherent histories. A model of evolutionary adaptation is shown to imply decoherence. A general interpretative framework is proposed: probability and value-definiteness are to have a similar status to the attribution of tense in classical spacetime theory.
    Direct download (3 more)  
     
    Export citation  
     
    My bibliography   14 citations  
  30.  53
    Elise M. Crull (2013). Exploring Philosophical Implications of Quantum Decoherence. Philosophy Compass 8 (9):875-885.
    Quantum decoherence is receiving a great deal of attention today not only in theoretical and experimental physics but also in branches of science as diverse as molecular biology, biochemistry, and even neuropsychology. It is no surprise that it is also beginning to appear in various philosophical debates concerning the fundamental structure of the world. The purpose of this article is primarily to acquaint non-specialists with quantum decoherence and clarify related concepts, and secondly to sketch its possible implications – (...)
    Direct download (6 more)  
     
    Export citation  
     
    My bibliography  
  31.  64
    Mario Castagnino, Roberto Laura & Olimpia Lombardi (2007). A General Conceptual Framework for Decoherence in Closed and Open Systems. Philosophy of Science 74 (5):968-980.
    In this paper we argue that the formalisms for decoherence originally devised to deal just with closed or open systems can be subsumed under a general conceptual framework, in such a way that they cooperate in the understanding of the same physical phenomenon. This new perspective dissolves certain conceptual difficulties of the einselection program but, at the same time, shows that the openness of the quantum system is not the essential ingredient for decoherence. †To contact the authors, please (...)
    Direct download (8 more)  
     
    Export citation  
     
    My bibliography   3 citations  
  32.  96
    Olimpia Lombardi, Juan Sebastián Ardenghi, Sebastian Fortin & Mario Castagnino (2011). Compatibility Between Environment-Induced Decoherence and the Modal-Hamiltonian Interpretation of Quantum Mechanics. Philosophy of Science 78 (5):1024-1036.
    Given the impressive success of environment-induced decoherence, nowadays no interpretation of quantum mechanics can ignore its results. The modal-Hamiltonian interpretation has proved to be effective for solving several interpretative problems but, since its actualization rule applies to closed systems, it seems to stand at odds of EID. The purpose of this paper is to show that this is not the case: the states einselected by the interaction with the environment according to EID are the eigenvectors of an actual-valued observable (...)
    Direct download (7 more)  
     
    Export citation  
     
    My bibliography  
  33.  41
    Mikio Namiki (1999). Decoherence and Wavefunction Collapse in Quantum Measurements. Foundations of Physics 29 (3):457-464.
    Examining the notion of wavefunction collapse (WFC) in quantum measurements, which came again to be in question in the recent debate on the quantum Zeno effect, we remark that WFC is realized only through decoherence among branch waves by detection, after a spectral decomposition process from an initial object wavefunction to a superposition of branch waves corresponding to relevant measurement propositions. We improve the definition of the decoherence parameter, so as to be fitted to general cases, by which (...)
    Direct download (5 more)  
     
    Export citation  
     
    My bibliography  
  34.  74
    Meir Hemmo & Orly Shenker (2003). Quantum Decoherence and the Approach to Equilibrium. Philosophy of Science 70 (2):330-358.
    We discuss a recent proposal by Albert to recover thermodynamics on a purely dynamical basis, using the quantum theory of the collapse of the wave function of Ghirardi, Rimini and Weber. We propose an alternative way to explain thermodynamics within no-collapse interpretations of quantum mechanics. Our approach relies on the standard quantum mechanical models of environmental decoherence of open systems, \eg Joos and Zeh and Zurek and Paz. This paper presents the two approaches and discusses their advantages. The problems (...)
    Direct download (10 more)  
     
    Export citation  
     
    My bibliography   2 citations  
  35.  53
    Andrew Elby (1994). The 'Decoherence' Approach to the Measurement Problem in Quantum Mechanics. PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1994:355 - 365.
    Decoherence results from the dissipative interaction between a quantum system and its environment. As the system and environment become entangled, the reduced density operator describing the system "decoheres" into a mixture (with the interference terms damped out). This formal result prompts some to exclaim that the measurement problem is solved. I will scrutinize this claim by examining how modal and relative-state interpretations can use decoherence. Although decoherence cannot rescue these interpretations from general metaphysical difficulties, decoherence may (...)
    Direct download  
     
    Export citation  
     
    My bibliography   3 citations  
  36.  25
    Guido Bacciagaluppi (2000). Delocalized Properties in the Modal Interpretation of a Continuous Model of Decoherence. Foundations of Physics 30 (9):1431-1444.
    I investigate the character of the definite properties defined by the Basic Rule in the Vermaas and Dieks' (1995) version of the modal interpretation of quantum mechanics, specifically for the case of the continuous model of decoherence by Joos and Zeh (1985). While this model suggests that the characteristic length that might be associated with the localisation of an individual system is the coherence length of the state (which converges rapidly to the thermal de Broglie wavelength), I show in (...)
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography   3 citations  
  37.  32
    Mario Castagnino & Olimpia Lombardi (2005). Self-Induced Decoherence and the Classical Limit of Quantum Mechanics. Philosophy of Science 72 (5):764-776.
    In this paper we argue that the emergence of the classical world from the underlying quantum reality involves two elements: self-induced decoherence and macroscopicity. Self-induced decoherence does not require the openness of the system and its interaction with the environment: a single closed system can decohere when its Hamiltonian has continuous spectrum. We show that, if the system is macroscopic enough, after self-induced decoherence it can be described as an ensemble of classical distributions weighted by their corresponding (...)
    Direct download (8 more)  
     
    Export citation  
     
    My bibliography   4 citations  
  38.  21
    D. M. Appleby (1999). Bohmian Trajectories Post-Decoherence. Foundations of Physics 29 (12):1885-1916.
    The role of the environment in producing the correct classical limit in the Bohm interpretation of quantum mechanics is investigated, in the context of a model of quantum Brownian motion. One of the effects of the interaction is to produce a rapid approximate diagonalisation of the reduced density matrix in the position representation. This effect is, by itself, insufficient to produce generically quasi-classical behaviour of the Bohmian trajectory. However, it is shown that, if the system particle is initially in an (...)
    Direct download (5 more)  
     
    Export citation  
     
    My bibliography   4 citations  
  39.  35
    Nick E. Mavromatos (2010). Decoherence and CPT Violation in a Stringy Model of Space-Time Foam. Foundations of Physics 40 (7):917-960.
    I discuss a model inspired from the string/brane framework, in which our Universe is represented (after perhaps appropriate compactification) as a three brane, propagating in a bulk space time punctured by D0-brane (D-particle) defects. As the D3-brane world moves in the bulk, the D-particles cross it, and from an effective observer on D3 the situation looks like a “space-time foam” with the defects “flashing” on and off (“D-particle foam”). The open strings, with their ends attached on the brane, which represent (...)
    Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  40.  41
    Osvaldo Pessoa Jr (1997). Can the Decoherence Approach Help to Solve the Measurement Problem? Synthese 113 (3):323-346.
    This work examines whether the environmentally-induced decoherence approach in quantum mechanics brings us any closer to solving the measurement problem, and whether it contributes to the elimination of subjectivism in quantum theory. A distinction is made between ,collapse, and ,decoherence,, so that an explanation for decoherence does not imply an explanation for collapse. After an overview of the measurement problem and of the open-systems paradigm, we argue that taking a partial trace is equivalent to applying the projection (...)
    Direct download (6 more)  
     
    Export citation  
     
    My bibliography   4 citations  
  41.  31
    J. Levitan, M. Lewkowicz & Y. Ashkenazy (1997). Enhancement of Decoherence by Chaotic-Like Behavior. Foundations of Physics 27 (2):203-214.
    We demonstrate by use of a simple one-dimensional model of a square barrier imbedded in an infinite potential well that decoherence is enhanced by chaotic-like behavior. We, moreover, show that the transition h→0 is singular. Finally it is argued that the time scale on which decoherence occurs depends, on the degree of complexity of the underlying quantum mechanical system, i.e., more complex systems decohere relatively faster than less complex ones.
    Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  42.  53
    Osvaldo Pessoa Jr (1997). Can the Decoherence Approach Help to Solve the Measurement Problem? Synthese 113 (3):323 - 346.
    This work examines whether the environmentally-induced decoherence approach in quantum mechanics brings us any closer to solving the measurement problem, and whether it contributes to the elimination of subjectivism in quantum theory. A distinction is made between 'collapse' and 'decoherence', so that an explanation for decoherence does not imply an explanation for collapse. After an overview of the measurement problem and of the open-systems paradigm, we argue that taking a partial trace is equivalent to applying the projection (...)
    Direct download  
     
    Export citation  
     
    My bibliography  
  43.  65
    Olimpia Lombardi, Sebastian Fortin & Mario Castagnino (2012). The Problem of Identifying the System and the Environment in the Phenomenon of Decoherence. In Henk W. de Regt (ed.), Epsa Philosophy of Science: Amsterdam 2009. Springer 161--174.
    According to the environment-induced approach to decoherence, the split of the Universe into the degrees of freedom which are of direct interest to the observer and the remaining degrees of freedom is absolutely essential for decoherence. However, the EID approach offers no general criterion for deciding where to place the “cut” between system and environment: the environment may be “external” or “internal”. The main purpose of this paper is to argue that decoherence is a relative phenomenon, better (...)
    Direct download (5 more)  
     
    Export citation  
     
    My bibliography  
  44.  3
    Mario Castagnino & Olimpia Lombardi (2004). Self-Induced Decoherence: A New Approach. Studies in History and Philosophy of Science Part B 35 (1):73-107.
    According to Zurek, decoherence is a process resulting from the interaction between a quantum system and its environment; this process singles out a preferred set of states, usually called “pointer basis”, that determines which observables will receive definite values. This means that decoherence leads to a sort of selection which precludes all except a small subset of the states in the Hilbert space of the system from behaving in a classical manner: environment-induced-superselection—einselection —is a consequence of the process (...)
    Direct download (3 more)  
     
    Export citation  
     
    My bibliography   4 citations  
  45.  26
    Guido Bacciagaluppi & Meir Hemmo (1994). Making Sense of Approximate Decoherence. PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1994:345 - 354.
    In realistic situations where a macroscopic system interacts with an external environment, decoherence of the quantum state, as derived in the decoherence approach, is only approximate. We argue that this can still give rise to facts, provided that during the decoherence process states that are, respectively, always close to eigenvectors of pointer position and record observable are correlated. We show in a model that this is always the case.
    Direct download  
     
    Export citation  
     
    My bibliography   3 citations  
  46.  34
    Osvaldo Pessoa (1997). Can the Decoherence Approach Help to Solve the Measurement Problem? Synthese 113 (3):323-346.
    This work examines whether the environmentally-induced decoherence approach in quantum mechanics brings us any closer to solving the measurement problem, and whether it contributes to the elimination of subjectivism in quantum theory. A distinction is made between ,collapse, and ,decoherence,, so that an explanation for decoherence does not imply an explanation for collapse. After an overview of the measurement problem and of the open-systems paradigm, we argue that taking a partial trace is equivalent to applying the projection (...)
    Direct download (5 more)  
     
    Export citation  
     
    My bibliography   2 citations  
  47.  6
    Richard Healey, Quantum Decoherence in a Pragmatist View: Resolving the Measurement Problem.
    This paper aims to show how adoption of a pragmatist interpretation permits a satisfactory resolution of the quantum measurement problem. The classic measurement problem dissolves once one recognizes that it is not the function of the quantum state to describe or represent the behavior of a quantum system. The residual problem of when, and to what, to apply the Born Rule may then be resolved by judicious appeal to decoherence. This can give sense to talk of measurements of photons (...)
    No categories
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  48.  30
    Thomas Breuer (1996). Subjective Decoherence in Quantum Measurements. Synthese 107 (1):1 - 17.
    General results about restrictions on measurements from inside are applied to quantum mechanics. They imply subjective decoherence: For an apparatus it is not possible to determine whether the joint system consisting of itself and the observed system is in a statistical state with or without interference terms; it is possible that the apparatus systematically mistakes the real pure state of the joint system for the decohered state. We discuss the relevance of subjective decoherence for quantum measurements and for (...)
    Direct download (6 more)  
     
    Export citation  
     
    My bibliography  
  49. L. S. (2003). Why Decoherence has Not Solved the Measurement Problem: A Response to P.W. Anderson. Studies in History and Philosophy of Science Part B 34 (1):135-142.
    We discuss why, contrary to claims recently made by P.W. Anderson, decoherence has not solved the quantum measurement problem.
     
    Export citation  
     
    My bibliography  
  50.  11
    Mario Castagnino & Olimpia Lombardi, Self-Induced Selection: A New Approach to Quantum Decoherence.
    According to Zurek, decoherence is a process resulting from the interaction between a quantum system and its environment; this process singles out a preferred set of states, usually called “pointer basis”, that determines which observables will receive definite values. This means that decoherence leads to a sort of selection which precludes all except a small subset of the states in the Hilbert space of the system from behaving in a classical manner: environment-induced-superselection (einselection) is a consequence of the (...)
    Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
1 — 50 / 203