Related categories
Siblings:History/traditions: Physics
329 found
Search inside:
(import / add options)   Order:
1 — 50 / 329
  1. Mario Abundo (2009). First-Passage Problems for Asymmetric Diffusions and Skew-Diffusion Processes. In Institute of Physics Krzysztof Stefanski (ed.), Open Systems and Information Dynamics. World Scientific Publishing Company 16--04.
    For a, b > 0, we consider a temporally homogeneous, one-dimensional diffusion process X(t) defined over I = (-b, a), with infinitesimal parameters depending on the sign of X(t). We suppose that, when X(t) reaches the position 0, it is reflected rightward to δ with probability p > 0 and leftward to -δ with probability 1 - p, where δ > 0. Closed analytical expressions are found for the mean exit time from the interval (-b, a), and for the probability (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    My bibliography  
  2. Stephen L. Adler & Jeeva Anandan (1996). Nonadiabatic Geometric Phase in Quaternionic Hilbert Space. Foundations of Physics 26 (12):1579-1589.
    We develop the theory of the nonadiabatic geometric phase, in both the Abelian and non-Abelian cases, in quaternionic Hilbert space.
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    My bibliography  
  3. Mavriche Adrian (2012). Dr. NON (non):10.
    The present document starts from the relative existence of the electromagnetic field, reaching through mental experiments its connection with the gravitational field, without the necessity to resort to other space - time dimensions or supplementary "exotic" particles. The final conclusion is that the field "electro-gravitational" and electromagnetic field with accelerated source are two different manifestations of the same single field dynamic. Whilst demonstrating why there are light sources with "flee" towards the red or blue of the light spectrum.
    Remove from this list  
    Translate
      Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  4. V. V. Afonin & V. Y. Petrov (2010). Is the Luttinger Liquid a New State of Matter? Foundations of Physics 40 (2):190-204.
    We are demonstrating that the Luttinger model with short range interaction can be treated as a type of Fermi liquid. In line with the main dogma of Landau’s theory one can define a fermion excitation renormalized by interaction and show that in terms of these fermions any excited state of the system is described by free particles. The fermions are a mixture of renormalized right and left electrons. The electric charge and chirality of the Landau quasi-particle is discussed.
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  5. D. V. Ahluwalia (1998). Book Review: Quantum Field Theory, Second Edition, by Lewis H. Ryder. [REVIEW] Foundations of Physics 28 (3):527-529.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  6. Muhammad Adeel Ajaib (2015). A Fundamental Form of the Schrodinger Equation. Foundations of Physics 45 (12):1586-1598.
    We propose a first order equation from which the Schrodinger equation can be derived. Matrices that obey certain properties are introduced for this purpose. We start by constructing the solutions of this equation in one dimension and solve the problem of electron scattering from a step potential. We show that the sum of the spin up and down, reflection and transmission coefficients, is equal to the quantum mechanical results for this problem. Furthermore, we present a three dimensional version of the (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  7. E. K. Akhmedov & A. Y. Smirnov (2011). Neutrino Oscillations: Entanglement, Energy-Momentum Conservation and QFT. [REVIEW] Foundations of Physics 41 (8):1279-1306.
    We consider several subtle aspects of the theory of neutrino oscillations which have been under discussion recently. We show that the S-matrix formalism of quantum field theory can adequately describe neutrino oscillations if correct physics conditions are imposed. This includes space-time localization of the neutrino production and detection processes. Space-time diagrams are introduced, which characterize this localization and illustrate the coherence issues of neutrino oscillations. We discuss two approaches to calculations of the transition amplitudes, which allow different physics interpretations: (i) (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  8. James Albertson (1959). Causality and Chance in Modern Physics. Modern Schoolman 36 (2):134-135.
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  9. S. Albeverio (1984). Non-Standard Analysis; Polymer Models, Quantum Fields. In Heinrich Mitter & Ludwig Pittner (eds.), Stochastic Methods and Computer Techniques in Quantum Dynamics. Springer-Verlag 233--254.
    We give an elementary introduction to non-standard analysis and its applications to the theory of stochastic processes. This is based on a joint book with J. E. Fenstad, R. Høegh-Krohn and T. Lindstrøm. In particular we give a discussion of an hyperfinite theory of Dirichlet forms with applications to the study of the Hamiltonian for a quantum mechanical particle in the potential created by a polymer. We also discuss new results on the existence of attractive polymer measures in dimension d (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    My bibliography  
  10. R. Aldrovandi, R. R. Cuzinatto & L. G. Medeiros (2006). Analytic Solutions for the Λ-FRW Model. Foundations of Physics 36 (11):1736-1752.
    The high precision attained by cosmological data in the last few years has increased the interest in exact solutions. Analytic expressions for solutions in the Standard Model are presented here for all combinations of Λ = 0, Λ ≠ 0, κ = 0, and κ ≠ 0, in the presence and absence of radiation and nonrelativistic matter. The most complete case (here called the ΛγCDM Model) has Λ ≠ 0, κ ≠ 0, and supposes the presence of radiation and dust. (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  11. Erik M. Alfsen & Frederic W. Shultz (2003). Geometry of State Spaces of Operator Algebras. Monograph Collection (Matt - Pseudo).
    In this book we give a complete geometric description of state spaces of operator algebras, Jordan as well as associative. That is, we give axiomatic characterizations of those convex sets that are state spaces of C*-algebras and von Neumann algebras, together with such characterizations for the normed Jordan algebras called JB-algebras and JBW-algebras. These non­ associative algebras generalize C*-algebras and von Neumann algebras re­spectively, and the characterization of their state spaces is not only of interest in itself, but is also (...)
    Remove from this list  
     
    Export citation  
     
    My bibliography   3 citations  
  12. A. D. Alhaidari (2014). Renormalization of the Strongly Attractive Inverse Square Potential: Taming the Singularity. Foundations of Physics 44 (10):1049-1058.
    Quantum anomalies in the inverse square potential are well known and widely investigated. Most prominent is the unbounded increase in oscillations of the particle’s state as it approaches the origin when the attractive coupling parameter is greater than the critical value of 1/4. Due to this unphysical divergence in oscillations, we are proposing that the interaction gets screened at short distances making the coupling parameter acquire an effective (renormalized) value that falls within the weak range 0–1/4. This prevents the oscillations (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  13. S. Twareque Ali, Claudio Carmeli, Teiko Heinosaari & Alessandro Toigo (2009). Commutative POVMs and Fuzzy Observables. Foundations of Physics 39 (6):593-612.
    In this paper we review some properties of fuzzy observables, mainly as realized by commutative positive operator valued measures. In this context we discuss two representation theorems for commutative positive operator valued measures in terms of projection valued measures and describe, in some detail, the general notion of fuzzification. We also make some related observations on joint measurements.
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  14. Robert Alicki (2009). Quantum Decay Cannot Be Completely Reversed: The 5% Rule. In Institute of Physics Krzysztof Stefanski (ed.), Open Systems and Information Dynamics. World Scientific Publishing Company 16--01.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  15. Vidal Alonso, Salvatore De Vincenzo & Luigi Mondino (1999). Tensorial Relativistic Quantum Mechanics in (1+1) Dimensions and Boundary Conditions. Foundations of Physics 29 (2):231-250.
    The tensorial relativistic quantum mechanics in (1+1) dimensions is considered. Its kinematical and dynamical features are reviewed as well as the problem of finding the Dirac spinor for given finite multivectors. For stationary states, the dynamical tensorial equations, equivalent to the Dirac equation, are solved for a free particle, for a particle inside a box, and for a particle in a step potential.
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    My bibliography  
  16. T. B. Anders, R. Von Mellenthin, B. Pfeil & H. Salecker (1993). Unitarity Bounds for 4-Fermion Contact Interactions. Foundations of Physics 23 (3):399-410.
    In this paper we consider the effect of unitarity bounds sb⩾s≡(E1+E2) cms 2 for the recently proposed types of nonderivative 4-fermion contact interactions. To this purpose we decompose the helicity amplitudes at c.m.s. into partial waves. The bounds are defined to hold for all reaction channels due to the same type of contact interaction. We find sb=τ4π/κ. Here κ is the coupling constant. The factor τ depends on the type of coupling and on the different cases to identify the fermions. (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  17. D. Arsenović, N. Burić, D. M. Davidović & S. Prvanović (2014). Lagrangian Form of Schrödinger Equation. Foundations of Physics 44 (7):725-735.
    Lagrangian formulation of quantum mechanical Schrödinger equation is developed in general and illustrated in the eigenbasis of the Hamiltonian and in the coordinate representation. The Lagrangian formulation of physically plausible quantum system results in a well defined second order equation on a real vector space. The Klein–Gordon equation for a real field is shown to be the Lagrangian form of the corresponding Schrödinger equation.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    My bibliography  
  18. R. Arshansky & L. P. Horwitz (1985). The Landau-Peierls Relation and a Causal Bound in Covariant Relativistic Quantum Theory. Foundations of Physics 15 (6):701-715.
    Thought experiments analogous to those discussed by Landau and Peierls are studied in the framework of a manifestly covariant relativistic quantum theory. It is shown that momentum and energy can be arbitrarily well defined, and that the drifts induced by measurement in the positions and times of occurrence of events remain within the (stable) spread of the wave packet in space-time. The structure of the Newton-Wigner position operator is studied in this framework, and it is shown that an analogous time (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography   1 citation  
  19. Ray E. Artz (1981). Quantum Mechanics in Galilean Space-Time. Foundations of Physics 11 (11-12):839-862.
    The usual quantum mechanical treatment of a Schrödinger particle is translated into manifestly Galilean-invariant language, primarily through the use of Wigner-distribution methods. The hydrodynamical formulation of quantum mechanics is derived directly from the Wigner-distribution formulation, and the two formulations are compared. Wigner distributions are characterized directly, i.e., without reference to wave functions, and a heuristic interpretation of Wigner distributions and their evolution is developed.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  20. David Atkinson, Dirac's Quantum Jump.
    This minicourse on quantum mechanics is intended for students who have already been rather well exposed to the subject at an elementary level. It is assumed that they have surmounted the first conceptual hurdles and also have struggled with the Schrödinger equation in one dimension.
    Remove from this list  
     
    Export citation  
     
    My bibliography  
  21. R. Aurich & F. Steiner (2001). Orbit Sum Rules for the Quantum Wave Functions of the Strongly Chaotic Hadamard Billiard in Arbitrary Dimensions. Foundations of Physics 31 (4):569-592.
    Sum rules are derived for the quantum wave functions of the Hadamard billiard in arbitrary dimensions. This billiard is a strongly chaotic (Anosov) system which consists of a point particle moving freely on a D-dimensional compact manifold (orbifold) of constant negative curvature. The sum rules express a general (two-point)correlation function of the quantum mechanical wave functions in terms of a sum over the orbits of the corresponding classical system. By taking the trace of the orbit sum rule or pre-trace formula, (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  22. K. Avinash & V. L. Rvachev (2000). Non-Archimedean Algebra: Applications to Cosmology and Gravitation. [REVIEW] Foundations of Physics 30 (1):139-152.
    Application of recently developed non-Archimedean algebra to a flat and finite universe of total mass M 0 and radius R 0 is described. In this universe, mass m of a body and distance R between two points are bounded from above, i.e., 0≤m≤M 0, 0≤R≤R 0. The universe is characterized by an event horizon at R 0 (there is nothing beyond it, not even space). The radial distance metric is compressed toward horizon, which is shown to cause the phenomenon of (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  23. Manuel Bächtold & Muriel Guedj (2014). Teaching Energy Informed by the History and Epistemology of the Concept with Implications for Teacher Education. In Michael R. Matthews (ed.), International Handbook of Research in History, Philosophy and Science Teaching. Springer 211-243.
    In this article, we put forward a new strategy for teaching the concept of energy. In the first section, we discuss how the concept is currently treated in educational programmes at primary and secondary level (taking the case of France), the learning difficulties that arise as well as the main teaching strategies presented in science education literature. In the second section, we argue that due to the complexity of the concept of energy, rethinking how it is taught should involve teacher (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    My bibliography  
  24. William Band & James L. Park (1978). Generalized Two-Level Quantum Dynamics. II. Non-Hamiltonian State Evolution. Foundations of Physics 8 (1-2):45-58.
    A theorem is derived that enables a systematic enumeration of all the linear superoperators ℒ (associated with a two-level quantum system) that generate, via the law of motion ℒρ= $\dot \rho$ , mappings ρ(0) → ρ(t) restricted to the domain of statistical operators. Such dynamical evolutions include the usual Hamiltonian motion as a special case, but they also encompass more general motions, which are noncyclic and feature a destination state ρ(t → ∞) that is in some cases independent of ρ(0).
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  25. A. S. Barabash (2010). Experimental Test of the Pauli Exclusion Principle. Foundations of Physics 40 (7):703-718.
    A short review is given of three experimental works on tests of the Pauli Exclusion Principle (PEP) in which the author has been involved during the last 10 years. In the first work a search for anomalous carbon atoms was done and a limit on the existence of such atoms was determined, $^{12}\tilde{\mathrm{C}}$ /12C <2.5×10−12. In the second work PEP was tested with the NEMO-2 detector and the limits on the violation of PEP for p-shell nucleons in 12C were obtained. (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  26. M. Barone (2004). The Vacuum as Ether in the Last Century. Foundations of Physics 34 (12):1973-1982.
    In this paper we review the evolution of the concept of “ vacuum ” according to different theories formulated in the last century, like Quantum Mechanics, Quantum Electrodynamics, Quantum Chromodynamics in Particle Physics and Cosmology. In all these theories a metastable vacuum state is considered which transforms from one state to another according to the energy taken into consideration. It is a “fluid” made up by matter and radiation present in the whole Universe, which may be identified with a modern (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  27. A. O. Barut (1995). Quantum Theory of Single Events Continued. Accelerating Wavelets and the Stern-Gerlach Experiment. Foundations of Physics 25 (2):377-381.
    Exact wavelet solutions of the wave equation for accelerating potentials are found and applied to single individual events in Stern-Gerlach experiment.
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  28. A. O. Barut (1990). Quantum Theory of Single Events: Localized De Broglie Wavelets, Schrödinger Waves, and Classical Trajectories. [REVIEW] Foundations of Physics 20 (10):1233-1240.
    For an arbitrary potential V with classical trajectoriesx=g(t), we construct localized oscillating three-dimensional wave lumps ψ(x, t,g) representing a single quantum particle. The crest of the envelope of the ripple follows the classical orbitg(t), slightly modified due to the potential V, and ψ(x, t,g) satisfies the Schrödinger equation. The field energy, momentum, and angular momentum calculated as integrals over all space are equal to the particle energy, momentum, and angular momentum. The relation to coherent states and to Schrödinger waves is (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography   1 citation  
  29. A. O. Barut, P. Budinich, J. Niederle & R. Raçzka (1994). Conformal Space-Times—The Arenas of Physics and Cosmology. Foundations of Physics 24 (11):1461-1494.
    The mathematical and physical aspects of the conformal symmetry of space-time and of physical laws are analyzed. In particular, the group classification of conformally flat space-times, the conformal compactifications of space-time, and the problem of imbedding of the flat space-time in global four-dimensional curved spaces with non-trivial topological and geometrical structure are discussed in detail. The wave equations on the compactified space-times are analyzed also, and the set of their elementary solutions constructed. Finally, the implications of global compactified space-times for (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  30. James Baugh, David Ritz Finkelstein, Andrei Galiautdinov & Mohsen Shiri-Garakani (2003). Transquantum Dynamics. Foundations of Physics 33 (9):1267-1275.
    Segal proposed transquantum commutation relations with two transquantum constants ħ′, ħ″ besides Planck's quantum constant ħ and with a variable i. The Heisenberg quantum algebra is a contraction—in a more general sense than that of Inönü and Wigner—of the Segal transquantum algebra. The usual constant i arises as a vacuum order-parameter in the quantum limit ħ′,ħ″→0. One physical consequence is a discrete spectrum for canonical variables and space-time coordinates. Another is an interconversion of time and energy accompanying space-time meltdown (disorder), (...)
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    My bibliography  
  31. Almut Beige, Gerhard C. Hegerfeldt & Dirk G. Sondermann (1997). Atomic Quantum Zeno Effect for Ensembles and Single Systems. Foundations of Physics 27 (12):1671-1688.
    The so-called quantum Zeno effect is essentially a consequence of the projection postulate for ideal measurements. To test the effect, Itanoet al. have performed an experiment on an ensemble of atoms where rapidly repeated level measurements were realized by means of short laser pulses. Using dynamical considerations, we give an explanation why the projection postulate can be applied in good approximation to such measurements. Corrections to ideal measurements are determined explicitly. This is used to discuss how far the experiment of (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  32. M. G. Benedict & W. Schleich (1993). On the Correspondence of Semiclassical and Quantum Phases in Cyclic Evolutions. Foundations of Physics 23 (3):389-397.
    Based on the exactly solvable case of a harmonic oscillator, we show that the direct correspondence between the Bohr-Sommerfeld phase of semiclassical quantum mechanics and the topological phase of Aharonov and Anandan is restricted to the case of a coherent state. For other Gaussian wave packets the geometric quantum phase strongly depends on the amount of squeezing.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  33. R. Bernabei, P. Belli, F. Cappella, R. Cerulli, C. J. Dai, A. D'Angelo, H. L. He, A. Incicchitti, H. H. Kuang, X. H. Ma, F. Montecchia, F. Nozzoli, D. Prosperi, X. D. Sheng & Z. P. Ye (2010). Non-Paulian Nuclear Processes in Highly Radiopure NaI(Tl): Status and Perspectives. [REVIEW] Foundations of Physics 40 (7):807-813.
    Searches for non-paulian nuclear processes, i.e. processes normally forbidden by the Pauli–Exclusion–Principle (PEP) with highly radiopure NaI(Tl) scintillators allow the test of this fundamental principle with high sensitivity. Status and perspectives are addressed.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  34. Robin Blume-Kohout, Carlton M. Caves & Ivan H. Deutsch (2002). Climbing Mount Scalable: Physical Resource Requirements for a Scalable Quantum Computer. [REVIEW] Foundations of Physics 32 (11):1641-1670.
    The primary resource for quantum computation is Hilbert-space dimension. Whereas Hilbert space itself is an abstract construction, the number of dimensions available to a system is a physical quantity that requires physical resources. Avoiding a demand for an exponential amount of these resources places a fundamental constraint on the systems that are suitable for scalable quantum computation. To be scalable, the effective number of degrees of freedom in the computer must grow nearly linearly with the number of qubits in an (...)
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    My bibliography  
  35. Martin Bohata & Jan Hamhalter (2010). Bell's Correlations and Spin Systems. Foundations of Physics 40 (8):1065-1075.
    The structure of maximal violators of Bell’s inequalities for Jordan algebras is investigated. It is proved that the spin factor V 2 is responsible for maximal values of Bell’s correlations in a faithful state. In this situation maximally correlated subsystems must overlap in a nonassociative subalgebra. For operator commuting subalgebras it is shown that maximal violators have the structure of the spin systems and that the global state (faithful on local subalgebras) acts as the trace on local subalgebras.
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography   1 citation  
  36. A. Bohm, M. Loewe, P. Patuleanu & C. Püntmann (1997). Jordan Blocks and Exponentially Decaying Higher-Order Gamow States. Foundations of Physics 27 (5):613-624.
    In the framework of the rigged Hilbert space, unstable quantum systems associated with first-order poles of the analytically continued S-matrix can be described by Gamow vectors which are generalized vectors with exponential decay and a Breit-Wigner energy distribution. This mathematical formalism can be generalized to quasistationary systems associated with higher-order poles of the S-matrix, which leads to a set of Gamow vectors of higher order with a non-exponential time evolution. One can define a state operator from the set of higher-order (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    My bibliography  
  37. Bruce Bokor, Homo Deceptus: How Language Creates its Own Reality.
    Homo deceptus is book that brings together new ideas on language, consciousness and physics into a comprehensive theory that unifies science and philosophy in a different kind of Theory of Everything. The subject of how we are to make sense of the world is addressed in a structured and ordered manner, which starts with a recognition that scientific truths are constructed within a linguistic framework. The author argues that an epistemic foundation of natural language must be understood before laying claim (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    My bibliography  
  38. Max Born (1953). Physical Reality. Philosophical Quarterly 3 (11):139-149.
    The notion of reality in the physical world has become, during the last century, somewhat problematic. The contrast between the simple and obvious reality of the innumerable instruments, machines, engines, and gadgets produced by our technological industry, which is applied physics, and of the vague and abstract reality of the fundamental concepts of physical science, as forces and fields, particles and quanta, is doubtlessly bewildering. There has already developed a gap between pure and applied science and between the groups of (...)
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    My bibliography   4 citations  
  39. Max Born (1926). Zur Quantenmechanik der Stoßvorgänge. Zeitschrift für Physik 37 (12):863-867.
    Durch eine Untersuchung der Stoßvorgänge wird die Auffassung entwickelt, daß die Quantenmechanik in der Schrödingerschen Form nicht nur die stationären Zustände, sondern auch die Quantensprünge zu beschreiben gestattet.
    Remove from this list  
    Translate
     
     
    Export citation  
     
    My bibliography   34 citations  
  40. Kim Joris Boström (2015). Quantum Mechanics as a Deterministic Theory of a Continuum of Worlds. Quantum Studies: Mathematics and Foundations 2 (3):315-347.
    A non-relativistic quantum mechanical theory is proposed that describes the universe as a continuum of worlds whose mutual interference gives rise to quantum phenomena. A logical framework is introduced to properly deal with propositions about objects in a multiplicity of worlds. In this logical framework, the continuum of worlds is treated in analogy to the continuum of time points; both “time” and “world” are considered as mutually independent modes of existence. The theory combines elements of Bohmian mechanics and of Everett’s (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography   1 citation  
  41. M. A. Braun & K. Urbanowski (1992). On the Description of Multiple Measurements of an Unstable State. Foundations of Physics 22 (4):617-630.
    The nondecay probability of an unstable particle at a definite moment of time is investigated provided this particle existed at all earlier observation moments separated with the time interval Δ. Using the usual postulates for quantum measurements it is proved that this probability is described by the exponential function of Δ>0, and it tends to 1 as Δ → 0. An approximate formula is found for the effective decay width Γ(Δ) appearing in the case of multiple measurements. It is shown (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  42. Ernst Breitenberger (1985). Uncertainty Measures and Uncertainty Relations for Angle Observables. Foundations of Physics 15 (3):353-364.
    Uncertainty measures must not depend on the choice of origin of the measurement scale; it is therefore argued that quantum-mechanical uncertainty relations, too, should remain invariant under changes of origin. These points have often been neglected in dealing with angle observables. Known measures of location and uncertainty for angles are surveyed. The angle variance angv {ø} is defined and discussed. It is particularly suited to the needs of quantum theory, because of its affinity to the Hilbert space metric, and its (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  43. Philippe Briet, François Germinet & Georgi Raikov (eds.) (2009). Spectral and Scattering Theory for Quantum Magnetic Systems, July 7-11, 2008, Cirm, Luminy, Marseilles, France. American Mathematical Society.
    Volume 500, 2009 On the Infrared Problem for the Dressed Non-Relativistic Electron in a Magnetic Field Laurent Amour, ...
    Remove from this list   Direct download  
     
    Export citation  
     
    My bibliography  
  44. A. Brocklehurst & M. Suárez (2000). Review. Quantum State Diffusion. I Percival. British Journal for the Philosophy of Science 51 (3):527-530.
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    My bibliography  
  45. P. Budinich (1995). Conformally Compactified Homogeneous Spaces. Possible Observable Consequences. Foundations of Physics 25 (7):969-993.
    Some arguments, based on the possible spontaneous violation of the cosmological principle (represented by the observed large-scale structures of galaxies), on the Cartan geometry of simple spinors, and on the Fock formulation of hydrogen atom wave equation in momentum space, are presented in favor of the hypothesis that space-time and momentum space should be both conformally compactified and should both originate from the two four-dimensional homogeneous spaces of the conformai group, both isomorphic (S 3 ×S 1)/Z 2 and correlated by (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  46. Paolo Budinich & Ryszard Raczka (1993). Eigenvibrations of the Expanding Universe. Foundations of Physics 23 (2):225-237.
    A theoretical interpretation of the observed periodicity of large-scale (∼128 Mpc) correlations of galaxies is proposed as due to eigenvibrations of the closed expanding universe. Eigensolutions of the equations of motion for a scalar field in an inflationary model allow one to compute the energy density, interpreted as matter density. Isotropic eigensolution give rise to a matter density distribution having a periodic structure centered at the north pole of the closed Robertson-Walker universe represented by S3/Z2. It is able to reproduce (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  47. N. Burić, D. B. Popović, M. Radonjić & S. Prvanović (2013). Hamiltonian Formulation of Statistical Ensembles and Mixed States of Quantum and Hybrid Systems. Foundations of Physics 43 (12):1459-1477.
    Representation of quantum states by statistical ensembles on the quantum phase space in the Hamiltonian form of quantum mechanics is analyzed. Various mathematical properties and some physical interpretations of the equivalence classes of ensembles representing a mixed quantum state in the Hamiltonian formulation are examined. In particular, non-uniqueness of the quantum phase space probability density associated with the quantum mixed state, Liouville dynamics of the probability densities and the possibility to represent the reduced states of bipartite systems by marginal distributions (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  48. Paul Busch (1987). Some Realizable Joint Measurements of Complementary Observables. Foundations of Physics 17 (9):905-937.
    Noncommuting quantum observables, if considered asunsharp observables, are simultaneously measurable. This fact is exemplified for complementary observables in two-dimensional state spaces. Two proposals of experimentally feasible joint measurements are presented for pairs of photon or neutron polarization observables and for path and interference observables in a photon split-beam experiment. A recent experiment proposed and performed by Mittelstaedt, Prieur, and Schieder in Cologne is interpreted as a partial version of the latter example.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography   6 citations  
  49. Paul Busch & Pekka Lahti, Observable (Compendium Entry).
    This is an entry to the Compendium of Quantum Physics, edited by F Weinert, K Hentschel and D Greenberg, to be published by Springer-Verlag.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    My bibliography  
  50. V. C. C. (1956). Experiment and Theory in Physics. Review of Metaphysics 10 (2):358-358.
    Remove from this list   Direct download  
     
    Export citation  
     
    My bibliography  
1 — 50 / 329