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Philosophy of Physical Science

Edited by Hans Halvorson (Princeton University)
Assistant editor: Joshua Luczak (University of Western Ontario)
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  1. added 2015-07-28
    Giacomo M. D’Ariano & Paolo Perinotti (forthcoming). Quantum Theory is an Information Theory. Foundations of Physics:1-13.
    In this paper we review the general framework of operational probabilistic theories, along with the six axioms from which quantum theory can be derived. We argue that the OPT framework along with a relaxed version of five of the axioms, define a general information theory. We close the paper with considerations about the role of the observer in an OPT, and the interpretation of the von Neumann postulate and the Schrödinger-cat paradox.
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  2. added 2015-07-25
    Geert Keil (2011). Ich bin jetzt hier - aber wo ist das? In Siri Granum Carson, Jonathan Knowles & Bjørn K. Myskja (eds.), Kant: Here, Now, and How. Mentis 15-34.
  3. added 2015-07-24
    Arkady Plotnitsky & Andrei Khrennikov (forthcoming). Reality Without Realism: On the Ontological and Epistemological Architecture of Quantum Mechanics. Foundations of Physics:1-32.
    First, this article considers the nature of quantum reality and the concept of realism in quantum theory, in conjunction with the roles of locality, causality, and probability and statistics there. Second, it offers two interpretations of quantum mechanics, developed by the authors of this article, the second of which is also a different theory of quantum phenomena. Both of these interpretations are statistical. The first interpretation, by A. Plotnitsky, “the statistical Copenhagen interpretation,” is nonrealist, insofar as the description or even (...)
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  4. added 2015-07-23
    Marius Stan (forthcoming). Huygens on Inertial Structure and Relativity. Philosophy of Science 83 (2).
    I explain and assess here Huygens’ concept of relative motion. I show that it allows him to ground most of the Law of Inertia, and also to explain rotation. Thereby his concept obviates the need for Newton’s absolute space. Thus his account is a powerful foundation for mechanics, though not without some tension.
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  5. added 2015-07-21
    Ioan Muntean (2015). Structural Pluralism and S-Dualities: A Project in String Realism. In Romanian Studies in Philosophy of Science. Springer International Publishing 199-219.
    In string theory with S-dualities, there is an object-oriented realism and a structure-oriented realism. This paper discusses the advantages of “string structural realism”, a form of the latter, having a multi-aspected structure with a “model-oriented” pluralistic ontology, and grounded in the relation among fundamental objects of various string models.
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  6. added 2015-07-21
    Ioan Muntean (2008). Mechanisms of Unification in Kaluza-Klein Theory. In D. Dieks (ed.), Ontology of Spacetime.
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  7. added 2015-07-20
    Sayantani Bera, Sandro Donadi, Kinjalk Lochan & Tejinder P. Singh (forthcoming). A Comparison Between Models of Gravity Induced Decoherence. Foundations of Physics:1-24.
    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 (...)
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  8. added 2015-07-20
    Alessandro Bisio, Giacomo Mauro D’Ariano, Paolo Perinotti & Alessandro Tosini (forthcoming). Weyl, Dirac and Maxwell Quantum Cellular Automata. Foundations of Physics:1-19.
    Recent advances on quantum foundations achieved the derivation of free quantum field theory from general principles, without referring to mechanical notions and relativistic invariance. From the aforementioned principles a quantum cellular automata theory follows, whose relativistic limit of small wave-vector provides the free dynamics of quantum field theory. The QCA theory can be regarded as an extended quantum field theory that describes in a unified way all scales ranging from an hypothetical discrete Planck scale up to the usual Fermi scale. (...)
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  9. added 2015-07-20
    Arkady Plotnitsky (forthcoming). A Matter of Principle: The Principles of Quantum Theory, Dirac’s Equation, and Quantum Information. Foundations of Physics:1-47.
    This article is concerned with the role of fundamental principles in theoretical physics, especially quantum theory. The fundamental principles of relativity will be addressed as well, in view of their role in quantum electrodynamics and quantum field theory, specifically Dirac’s work, which, in particular Dirac’s derivation of his relativistic equation of the electron from the principles of relativity and quantum theory, is the main focus of this article. I shall also consider Heisenberg’s earlier work leading him to the discovery of (...)
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  10. added 2015-07-19
    Nicholas W. Best (forthcoming). Lavoisier’s “Reflections on Phlogiston” II: On the Nature of Heat. Foundations of Chemistry:1-11.
    Having refuted the phlogiston theory, Lavoisier uses this second portion of his essay to expound his new theory of combustion, based on the oxygen principle. He gives a mechanistic account of thermodynamic phenomena in terms of a subtle fluid and its ability to penetrate porous bodies. He uses this hypothetical fluid to explain volume changes, heat capacity and latent heat. Beyond the three types of combustion that he distinguishes and defines, Lavoisier also explains other chemical sources of heat, such as (...)
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  11. added 2015-07-19
    Cisco Gooding & William G. Unruh (forthcoming). Bootstrapping Time Dilation Decoherence. Foundations of Physics:1-13.
    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, (...)
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  12. added 2015-07-19
    Andor Frenkel (forthcoming). Dependence of the Time-Reading Process of the Salecker–Wigner Quantum Clock on the Size of the Clock. Foundations of Physics:1-13.
    It is shown in the present note that the degree of the complexity of the time-reading process of the Salecker–Wigner clock depends on the size of the clock. This dependence leads to a relation between the size and the accuracy of the clock, and suggests a precise optimal value for the size in agreement with the order of magnitude value established by Salecker and Wigner.
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  13. added 2015-07-19
    Alexei Grinbaum (forthcoming). Quantum Theory as a Critical Regime of Language Dynamics. Foundations of Physics:1-10.
    Some mathematical theories in physics justify their explanatory superiority over earlier formalisms by the clarity of their postulates. In particular, axiomatic reconstructions drive home the importance of the composition rule and the continuity assumption as two pillars of quantum theory. Our approach sits on these pillars and combines new mathematics with a testable prediction. If the observer is defined by a limit on string complexity, information dynamics leads to an emergent continuous model in the critical regime. Restricting it to a (...)
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  14. added 2015-07-19
    I. Bersons & R. Veilande (forthcoming). Nonlinear Models of Electric Charge and Magnetic Moment. Foundations of Physics:1-7.
    The models of the electric charge and magnetic moment are presented based on the nonlinear response of a vacuum on the applied electric and magnetic fields. The model of the electric charge contains one parameter—the radius of charge—and predicts one value of the electric charge for all elementary particles independently on the value of this radius. Different values of this parameter for the electron are discussed.
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  15. added 2015-07-19
    Irina Basieva & Andrei Khrennikov (forthcoming). On the Possibility to Combine the Order Effect with Sequential Reproducibility for Quantum Measurements. Foundations of Physics:1-15.
    In this paper we study the problem of a possibility to use quantum observables to describe a possible combination of the order effect with sequential reproducibility for quantum measurements. By the order effect we mean a dependence of probability distributions on the order of measurements. We consider two types of the sequential reproducibility: adjacent reproducibility ) and separated reproducibility). The first one is reproducibility with probability 1 of a result of measurement of some observable A measured twice, one A measurement (...)
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  16. added 2015-07-19
    Stéphanie Lacour, Sacha Loeve, Brice Laurent, Virginie Albe, Aurélie Delemarle, Bernard Bartenlian & Sophie Lanone (forthcoming). Deliberating Responsibility: A Collective Contribution by the C’Nano IdF Nanoscience & Society Office. Foundations of Chemistry:1-21.
    The very existence of explicit techno-scientific controversies in the “nano” arena is often denied on behalf of a conception of science, risks, public engagement and responsibility which borders on a disembodied idealism and merits at least serious discussion. The recurrence of this view prompted us to clarify our position regarding our common field of research, in order to avoid being trapped in the seemingly clear divide between the universal and neutral pursuit of pure science, on the one hand, and on (...)
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  17. added 2015-07-19
    Chethan Krishnan (forthcoming). A Generalization of Gravity. Foundations of Physics:1-12.
    I consider theories of gravity built not just from the metric and affine connection, but also other symmetric tensor. The Lagrangian densities are scalars built from them, and the volume forms are related to Cayley’s hyperdeterminants. The resulting diff-invariant actions give rise to geometric theories that go beyond the metric paradigm, and contain Einstein gravity as a special case. Examples contain theories with generalizeations of Riemannian geometry. The 0-tensor case is related to dilaton gravity. These theories can give rise to (...)
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  18. added 2015-07-17
    Brice Laurent (forthcoming). Operations for a Problem of Existence: Dealing with the Ontological Uncertainty of Nano Substances. Foundations of Chemistry:1-18.
    This paper discusses the operations meant to act on situations of ontological uncertainties for chemicals. Using examples related to substances developed as part of nanotechnology programs, it analyses technical and social instruments meant to define the existence of these substances, as « new » or « existing » chemicals. Carbon nanotubes developed by a French company offer an illustration of containment, while the legal disputes about nano silver in the U.S. display oppositions about whether or not these compounds are equivalent (...)
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  19. added 2015-07-08
    Ramzi Suleiman, Information Relativity Theory and its Application to Time and Space.
    In a recent paper I proposed a novel relativity theory termed Information Relativity (IR). Unlike Einstein's relativity which dictates as force majeure that relativity is a true state of nature, Information Relativity assumes that relativity results from difference in information about nature between observers who are in motion relative to each other. The theory is based on two axioms: 1. the laws of physics are the same in all inertial frames of reference (Special relativity's first axiom); 2. All translations of (...)
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  20. added 2015-07-08
    Eyal Heifetz & Eliahu Cohen (forthcoming). Toward a Thermo-Hydrodynamic Like Description of Schrödinger Equation Via the Madelung Formulation and Fisher Information. Foundations of Physics:1-12.
    We revisit the analogy suggested by Madelung between a non-relativistic time-dependent quantum particle, to a fluid system which is pseudo-barotropic, irrotational and inviscid. We first discuss the hydrodynamical properties of the Madelung description in general, and extract a pressure like term from the Bohm potential. We show that the existence of a pressure gradient force in the fluid description, does not violate Ehrenfest’s theorem since its expectation value is zero. We also point out that incompressibility of the fluid implies conservation (...)
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  21. added 2015-07-06
    Nicholas Maxwell (2015). Can The World Learn Wisdom. Philosophy Now (108):32-35.
    The crisis of our times is that we have science without wisdom. All our current global problems have arisen as a result. Learning how to become wiser has become, not a luxury, but a necessity. The key is to learn from the success of science. We need to learn from scientific progress how to achieve social progress towards a wiser world. This is an old idea that goes back to the French Enlightenment. However, in developing the idea, the philosophes of (...)
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  22. added 2015-07-04
    Andrei Khrennikov (forthcoming). Unconditional Quantum Correlations Do Not Violate Bell’s Inequality. Foundations of Physics:1-11.
    In this paper I demonstrate that the quantum correlations of polarization observables used in Bell’s argument against local realism have to be interpreted as conditional quantum correlations. By taking into account additional sources of randomness in Bell’s type experiments, i.e., supplementary to source randomness, I calculate the complete quantum correlations. The main message of the quantum theory of measurement is that complete correlations can be essentially smaller than the conditional ones. Additional sources of randomness diminish correlations. One can say another (...)
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  23. added 2015-07-04
    Masanari Asano, Irina Basieva, Andrei Khrennikov, Masanori Ohya, Yoshiharu Tanaka & Ichiro Yamato (forthcoming). Quantum Information Biology: From Information Interpretation of Quantum Mechanics to Applications in Molecular Biology and Cognitive Psychology. Foundations of Physics:1-17.
    We discuss foundational issues of quantum information biology —one of the most successful applications of the quantum formalism outside of physics. QIB provides a multi-scale model of information processing in bio-systems: from proteins and cells to cognitive and social systems. This theory has to be sharply distinguished from “traditional quantum biophysics”. The latter is about quantum bio-physical processes, e.g., in cells or brains. QIB models the dynamics of information states of bio-systems. We argue that the information interpretation of quantum mechanics (...)
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  24. added 2015-07-04
    Emmanuel Haven (forthcoming). Potential Functions and the Characterization of Economics-Based Information. Foundations of Physics:1-13.
    The formulation of quantum mechanics as a diffusion process by Nelson provides for an interesting approach on how we may transit from classical mechanics into quantum mechanics. Besides the presence of the real potential function, another type of potential function forms an intrinsic part of this theory. In this paper we attempt to show how both types of potential functions can have a use in a resolutely macroscopic context like financial asset pricing. We are particularly interested in uncovering how the (...)
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  25. added 2015-06-30
    Edward P. Butler (2015). Universality and Locality in Platonic Polytheism. Walking the Worlds: A Biannual Journal of Polytheism and Spiritwork 1 (2).
    In a famous quote reported by his biographer Marinus, Proclus says that a philosopher should be like a “priest of the whole world in common”. This essay examines what this universality of the philosopher’s religious practice entails, first with reference to Marinus’ testimony concerning Proclus’ own devotional life, and then with respect to the systematic Platonic understanding of divine ‘locality’. The result is, first, that the philosopher’s ‘universality’ is at once more humble than it sounds, and more far-reaching; and second, (...)
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  26. added 2015-06-29
    Federico Zalamea (forthcoming). The Mathematical Description of a Generic Physical System. Topoi:1-10.
    When dealing with a certain class of physical systems, the mathematical characterization of a generic system aims to describe the phase portrait of all its possible states. Because they are defined only up to isomorphism, the mathematical objects involved are “schematic structures”. If one imposes the condition that these mathematical definitions completely capture the physical information of a given system, one is led to a strong requirement of individuation for physical states. However, we show there are not enough qualitatively distinct (...)
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  27. added 2015-06-27
    Robert J. Rovetto, An Ontological Architecture for Orbital Debris Data.
    The orbital debris problem presents an opportunity for inter-agency and international cooperation toward the mutually beneficial goals of debris prevention, mitigation, remediation, and improved space situational awareness (SSA). Achieving these goals requires sharing orbital debris and other SSA data. Toward this, I present an ontological architecture for the orbital debris and broader SSA domain, taking steps in the creation of an orbital debris ontology (ODO). The purpose of this ontological system is to (I) represent general orbital debris and SSA domain (...)
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  28. added 2015-06-27
    Robert J. Rovetto, Defending Spaceflight - The Echoes of Apollo.
    This paper defends, and emphasizes the importance of, spaceflight, broadly construed to include human and unmanned spaceflight, space science, exploration and development. I specifically provide counter-replies to remarks by Dr. Steven Weinberg against human spaceflight. In this defense of peaceful spaceflight I draw upon a variety of sources. Although a focus is human spaceflight, human and unmanned modes must not be treated as an either-or opposition. Rather, each has a critical role to play in moving humanity forward as a spacefaring (...)
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  29. added 2015-06-26
    Gabriel Vacariu, The Unbelievable Similarities Between My Ideas (Philosophy of Mind, Cognitive Neuroscience, Physics, Mainly From 2005-2008) and the Ideas of Other People (From 2011-2014).
    http://filosofie.unibuc.ro/cv_gabriel_vacariu/.
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  30. added 2015-06-23
    Franck Varenne, Pierre Chaigneau, Jean Petitot & René Doursat (2015). Programming the Emergence in Morphogenetically Architected Systems. Acta Biotheoretica 63 (3).
    Large sets of elements interacting locally and producing specific architectures reliably form a category that transcends the usual dividing line between biological and engineered systems. We propose to call them morphogenetically architected complex systems (MACS). While taking the emergence of properties seriously, the notion of MACS enables at the same time the design (or “meta-design”) of operational means that allow controlling and even, paradoxically, programming this emergence. To demonstrate our claim, we first show that among all the self-organized systems studied (...)
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  31. added 2015-06-23
    Ceenom, Message Ceenom: The Brief.
    The unabridged Message Ceenom is available at http://ceen.me and http://ceen.in.
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  32. added 2015-06-22
    Harjit Bhogal & Zee R. Perry (2015). What the Humean Should Say About Entanglement. Noûs 49 (3).
    Tim Maudlin has influentially argued that Humeanism about laws of nature stands in conflict with quantum mechanics. Specifically Humeanism implies the principle Separability: the complete physical state of a world is determined by the intrinsic physical state of each space-time point. Maudlin argues Separability is violated by the entangled states posited by QM. We argue that Maudlin only establishes that a stronger principle, which we call Strong Separability, is in tension with QM. Separability is not in tension with QM. Moreover, (...)
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  33. added 2015-06-20
    Ramin [A.] Zahedi (Jan 2015). On Discrete (Digital) Physics: As a Perfect Deterministic Structure for Reality - And the Fundamental Field Equations of Physics. arXiv:1501.01373:[60 Pages].
    In this paper I provide an analysis and overview of some notable definitions, works and thoughts concerning discrete physics (a.k.a. digital philosophy, digital physics or digital cosmology) that mainly suggest a finite, discrete and deterministic characteristic for the physical world, as well as, of the cellular automaton, which could serve as the basis of a (or the only) perfect mathematical deterministic model for the physical reality. Moreover, as a confirmation, in Appendix 1 (Ref. [37]) I've shown that by linearization and (...)
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  34. added 2015-06-20
    Ramin [A.] Zahedi (Jan 2015). On the Logical Structure of the Fundamental Forces of Nature: A New Deterministic Mathematical Approach. arXiv:1501.01373:[50 Pages].
    Let start with one of the greatest ontological questions: “Why the universe and the fundamental forces that are acting in it are in the way, and form and shape, which we realize them?”; the forces that are causers of all the movements and actions in the physical world. In this article, we are going to consider this question by a mathematical approach. -/- The main idea of this article is based on my earlier published articles (references [1], [2], [3], [4], (...)
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  35. added 2015-06-19
    Noboru Watanabe (forthcoming). On Entropy of Quantum Compound Systems. Foundations of Physics:1-19.
    We review some notions for general quantum entropies. The entropy of the compound systems is discussed and a numerical computation of the quantum dynamical systems is carried for the noisy optical channel.
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  36. added 2015-06-18
    Marius Stan (forthcoming). Kant and the Object of Determinate Experience. Philosophers' Imprint 15.
    An influential view has it that the paradigm application of Kant’s categories is Newton’s dynamics. Though cogent, the claim makes the categories too narrow, because Newton’s laws had explanatory limits known well before the 1780s. I show here that the categories are broad enough to avoid that problem: I prove that Kant can ground basic laws for all classical mechanics, which is demonstrably more general than Newton’s theory. To make my case, I survey three brands of Enlightenment dynamics, based respectively (...)
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  37. added 2015-06-18
    Abuzaid Samir (2014). The Unified Equation of Gravity and QM: The Case of Non-Relativistic Motion. AL-MUKHATABAT 11.
    We propose to simplify the problem of the unified theory of Quantum-Gravity through dealing first with the simple case of non-relativistic equations of Gravity and Quantum Mechanics. We show that unification of the two non-relativistic formalisms can be achieved through the joined classical and Quantum postulate that every natural body is composed of N identical final particles. This includes the current 'elementary' particles of the standard model such as quarks, photons, gluons, etc. Furthermore, we show that this opens a new (...)
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  38. added 2015-06-18
    Robert J. Rovetto (2013). The Essential Role of Human Spaceflight. Space Policy 29 (4):225-228.
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  39. added 2015-06-15
    Brian Josephson, How Observers Create Reality.
    Wheeler proposed that repeated acts of observation give rise to the reality that we observe, but offered no detailed mechanism for this. Here this creative process is accounted for on the basis of the idea that nature has a deep technological aspect that evolves as a result of selection processes that act upon observers making use of the technologies. This leads to the conclusion that our universe is the product of agencies that use these evolved technologies to suit particular purposes.
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  40. added 2015-06-11
    Oliver Pooley (forthcoming). Background Independence, Diffeomorphism Invariance, and the Meaning of Coordinates. In Dennis Lehmkuhl (ed.), Towards a Theory of Spacetime Theories. Birkhäuser
    Diffeomorphism invariance is sometimes taken to be a criterion of background independence. This claim is commonly accompanied by a second, that the genuine physical magnitudes (the ``observables'') of background-independent theories and those of background-dependent (non-diffeomorphism-invariant) theories are essentially different in nature. I argue against both claims. Background-dependent theories can be formulated in a diffeomorphism-invariant manner. This suggests that the nature of the physical magnitudes of relevantly analogous theories (one background free, the other background dependent) is essentially the same. The temptation (...)
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  41. added 2015-06-09
    Richard Corry (2015). Retrocausal Models for EPR. Studies in the History and Philosophy of Modern Physics 49:1-9.
    This paper takes up Huw Price׳s challenge to develop a retrocausal toy model of the Bell-EPR experiment. I develop three such models which show that a consistent, local, hidden-variables interpretation of the EPR experiment is indeed possible, and which give a feel for the kind of retrocausation involved. The first of the models also makes clear a problematic feature of retrocausation: it seems that we cannot interpret the hidden elements of reality in a retrocausal model as possessing determinate dispositions to (...)
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  42. added 2015-06-08
    T. S. Biró & P. Ván (forthcoming). Splitting the Source Term for the Einstein Equation to Classical and Quantum Parts. Foundations of Physics:1-18.
    We consider the special and general relativistic extensions of the action principle behind the Schrödinger equation distinguishing classical and quantum contributions. Postulating a particular quantum correction to the source term in the classical Einstein equation we identify the conformal content of the above action and obtain classical gravitation for massive particles, but with a cosmological term representing off-mass-shell contribution to the energy–momentum tensor. In this scenario the—on the Planck scale surprisingly small—cosmological constant stems from quantum bound states having a Bohr (...)
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  43. added 2015-06-08
    Iulian D. Toader (2015). Editorial: New Perspectives in the Philosophy of Physics. Foundations of Physics:1.
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  44. added 2015-06-08
    G. Doyen & D. Drakova (2015). Copenhagen Quantum Mechanics Emerges From a Deterministic Schrödinger Theory in 11 Dimensional Spacetime Including Weak Field Gravitation. Foundations of Physics 45 (8):959-999.
    We construct a world model consisting of a matter field living in 4 dimensional spacetime and a gravitational field living in 11 dimensional spacetime. The seven hidden dimensions are compactified within a radius estimated by reproducing the particle–wave characteristics of diffraction experiments. In the presence of matter fields the gravitational field develops localized modes with elementary excitations called gravonons which are induced by the sources. The final world model treated here contains only gravonons and a scalar matter field. The gravonons (...)
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  45. added 2015-06-05
    C. Curceanu, S. Bartalucci, A. Bassi, M. Bazzi, S. Bertolucci, C. Berucci, A. M. Bragadireanu, M. Cargnelli, A. Clozza, L. De Paolis, S. Di Matteo, S. Donadi, A. D’Uffizi, J.-P. Egger, C. Guaraldo, M. Iliescu, T. Ishiwatari, M. Laubenstein, J. Marton, E. Milotti, A. Pichler, D. Pietreanu, K. Piscicchia, T. Ponta, E. Sbardella, A. Scordo, H. Shi, D. L. Sirghi, F. Sirghi, L. Sperandio, O. Vazquez Doce & J. Zmeskal (forthcoming). Spontaneously Emitted X-Rays: An Experimental Signature of the Dynamical Reduction Models. Foundations of Physics:1-6.
    We present the idea of searching for X-rays as a signature of the mechanism inducing the spontaneous collapse of the wave function. Such a signal is predicted by the continuous spontaneous localization theories, which are solving the “measurement problem” by modifying the Schrödinger equation. We will show some encouraging preliminary results and discuss future plans and strategy.
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  46. added 2015-06-05
    L. S. F. Olavo (forthcoming). Foundations of Quantum Mechanics: On Rotations by 4pi for Half-Integral Spin Particles. Foundations of Physics:1-12.
    Rotations in Quantum Mechanics are a very well-known subject. When one is faced with rotations related to the SO group, for instance, all the underlying operators are well-known and built from their classical counterparts. However, when it comes to represent rotations related to the SU group, it is always argued that there is no classical counterpart from which the expressions for the quantum mechanical operators can be built. The approach is always done using matrix representation . In the way of (...)
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  47. added 2015-06-05
    Ciprian Dariescu & Marina-Aura Dariescu (forthcoming). Quantum Analysis of K=-1 Robertson–Walker Universe. Foundations of Physics:1-19.
    The \\)-Robertson–Walker spacetime is under investigation. With the derived Hamilton operator, we are solving the Wheeler–De Witt Equation and its Schrödinger-like extension, for physically important forms of the effective potential. The closed form solutions, expressed in terms of Heun’s functions, allow us to comment on the occurrence of Universe from highly probable quantum states.
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  48. added 2015-06-03
    Theodorus M. Nieuwenhuizen & Matthew T. P. Liska (forthcoming). Simulation of the Hydrogen Ground State in Stochastic Electrodynamics-2: Inclusion of Relativistic Corrections. Foundations of Physics:1-13.
    In a recent paper the authors studied numerically the hydrogen ground state in stochastic electrodynamics within the the non-relativistic approximation. In quantum theory the leading non-relativistic corrections to the ground state energy dominate the Lamb shift related to the photon cloud that should cause the quantum-like behaviour of SED. The present work takes these corrections into account in the numerical modelling. It is found that they have little effect; the self-ionisation that occurs without them remains present. It is speculated that (...)
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  49. added 2015-06-03
    Roderick I. Sutherland (forthcoming). Lagrangian Description for Particle Interpretations of Quantum Mechanics: Single-Particle Case. Foundations of Physics:1-11.
    A Lagrangian description is presented which can be used in conjunction with particle interpretations of quantum mechanics. A special example of such an interpretation is the well-known Bohm model. The Lagrangian density introduced here also contains a potential for guiding the particle. The advantages of this description are that the field equations and the particle equations of motion can both be deduced from a single Lagrangian density expression and that conservation of energy and momentum are assured. After being developed in (...)
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  50. added 2015-06-03
    Alyssa Ney (2013). Ontological Reduction and the Wave Function Ontology. In Alyssa Ney & David Z. Albert (eds.), The Wave Function: Essays on the Metaphysics of Quantum Mechanics. Oxford University Press 168-183.
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