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Philip Pearle [17]P. Pearle [2]
  1.  42
    Relativistic Dynamical Reduction Models: General Framework and Examples. [REVIEW]G. C. Ghirardi, R. Grassi & P. Pearle - 1990 - Foundations of Physics 20 (11):1271-1316.
    The formulation of a relativistic theory of state-vector reduction is proposed and analyzed, and its conceptual consequences are elucidated. In particular, a detailed discussion of stochastic invariance and of local and nonlocal aspects at the level of individual systems is presented.
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  2.  10
    How Stands Collapse II.Philip Pearle - 2009 - In Wayne C. Myrvold & Joy Christian (eds.), Quantum Reality, Relativistic Causality, and Closing the Epistemic Circle. Springer. pp. 257--292.
  3.  39
    Wavefunction Collapse and Conservation Laws.Philip Pearle - 2000 - Foundations of Physics 30 (8):1145-1160.
    It is emphasized that the collapse postulate of standard quantum theory can violate conservation of energy-momentum and there is no indication from where the energy-momentum comes or to where it goes. Likewise, in the Continuous Spontaneous Localization (CSL) dynamical collapse model, particles gain energy on average. In CSL, the usual Schrödinger dynamics is altered so that a randomly fluctuating classical field interacts with quantized particles to cause wavefunction collapse. In this paper it is shown how to define energy for the (...)
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  4.  60
    Gravity, Energy Conservation, and Parameter Values in Collapse Models.Philip Pearle & Euan Squires - 1996 - Foundations of Physics 26 (3):291-305.
    We interpret the probability rule of the CSL collapse theory to mean to mean that the scalar field which causes collapse is the gravitational curvature scalar with two sources, the expectation value of the mass density (smeared over the GRW scale a) and a white noise fluctuating source. We examine two models of the fluctuating source, monopole fluctuations and dipole fluctuations, and show that these correspond to two well-known CSL models. We relate the two GRW parameters of CSL to fundamental (...)
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  5. Wavefunction Collapse and Random Walk.Brian Collett & Philip Pearle - 2003 - Foundations of Physics 33 (10):1495-1541.
    Wavefunction collapse models modify Schrödinger's equation so that it describes the rapid evolution of a superposition of macroscopically distinguishable states to one of them. This provides a phenomenological basis for a physical resolution to the so-called “measurement problem.” Such models have experimentally testable differences from standard quantum theory. The most well developed such model at present is the Continuous Spontaneous Localization (CSL) model in which a universal fluctuating classical field interacts with particles to cause collapse. One “side effect” of this (...)
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  6.  13
    Elements of Physical Reality, Nonlocality and Stochasticity in Relativistic Dynamical Reduction Models.GianCarlo Ghirardi & Philip Pearle - 1990 - PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1990:35 - 47.
    The problem of getting a relativistic generalization of the CSL dynamical reduction model, which has been presented in part I, is discussed. In so doing we have the opportunity to introduce the idea of a stochastically invariant theory. The theoretical model we present, that satisfies this kind of invariance requirement, offers us the possibility to reconsider, from a new point of view, some conceptually relevant issues such as nonlocality, the legitimacy of attributing elements of physical reality to physical systems and (...)
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  7.  40
    Constraint on Collapse Models by Limit on Spontaneous X-Ray Emission in Ge.Brian Collett, Philip Pearle, Frank Avignone & Shmuel Nussinov - 1995 - Foundations of Physics 25 (10):1399-1412.
    The continuous spontaneous localization (CSL) model modifies Schrödinger's equation so that the collapse of the state vector is described as a physical process (a special interaction of particles with a universal fluctuating field). A consequence of the model is that an electron in an atom should occasionally get “spontaneously” knocked out of the atom. The CSL ionization rate for the 1s electrons in the Ge atom is calculated and compared with an experimental upper limit for the rate of “spontaneously” generated (...)
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  8.  32
    Consequence for Wavefunction Collapse Model of the Sudbury Neutrino Observatory Experiment.Gordon Jones, Philip Pearle & James Ring - 2004 - Foundations of Physics 34 (10):1467-1474.
    It is shown that data on the dissociation rate of deuterium obtained in an experiment at the Sudbury Neutrino Observatory provides evidence that the Continuous Spontaneous Localization wavefunction collapse model should have mass–proportional coupling to be viable.
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  9.  44
    When Can a Classical Electron Accelerate Without Radiating?Philip Pearle - 1978 - Foundations of Physics 8 (11-12):879-891.
    A classical point electron radiates when it accelerates. However, there are classical electron models with extended charge distributions which can accelerate and/or deform without radiating. Can a model be contrived that will undergo radiationless motion while accelerating (on the average) over a distance large compared to its size? The answer is no: we prove that the “center” of the electron is always closer than the electron “diameter” to a fictitious point undergoing constant-velocity motion, if the electron's motion is radiationless.
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  10.  31
    Absence of Radiationless Motions of Relativistically Rigid Classical Electron.Philip Pearle - 1977 - Foundations of Physics 7 (11-12):931-945.
    Radiationless motion of a charge distribution is reviewed, and the necessary condition conjectured by Goedecke is proved. Then it is shown that a nonrotating, uniformly charged, spherical shell (as seen from its own rest frame) which moves in a relativistically invariant fashion does not have any bounded radiationless motions, unlike its nonrelativistic counterpart.
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  11.  51
    Stephen L. Adler, Quantum Theory as an Emergent Phenomenon, Cambridge University Press, Cambridge, ISBN 0521831946, 2004, 238pp. (US$ 50, £40 Hardcover). [REVIEW]P. Pearle - 2005 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 36 (4):716-723.
  12.  43
    The CSL Collapse Model and Spontaneous Radiation: An Update. [REVIEW]Philip Pearle, James Ring, Juan I. Collar & I. I. I. Avignone - 1999 - Foundations of Physics 29 (3):465-480.
    A brief review is given of the continuous spontaneous localization (CSL) model, in which a classical field interacts with quantized particles to cause dynamical wavefunction collapse. One of the model's predictions is that particles “spontaneously” gain energy at a slow rate. When applied to the excitation of a nucleon in a Ge nucleus, it is shown how a limit on the relative collapse rates of neutron and proton can be obtained, and a rough estimate is made from data. When applied (...)
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  13.  17
    Might God Toss Coins?Philip Pearle - 1982 - Foundations of Physics 12 (3):249-263.
    In the problem of the gambler's ruin, a classic problem in probability theory, a number of gamblers play against each other until all but one of them is “wiped out.” It is shown that this problem is identical to a previously presented formulation of the reduction of the state vector, so that the state vectors in a linear superposition may be regarded as “playing” against each other until all but one of them is “wiped out.” This is a useful part (...)
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  14.  1
    The CSL Collapse Model and Spontaneous Radiation: An Update.Frank T. Avignone, Juan I. Collar, James Ring & Philip Pearle - 1999 - Foundations of Physics 29 (3):465-480.
    A brief review is given of the continuous spontaneous localization model, in which a classical field interacts with quantized particles to cause dynamical wavefunction collapse. One of the model's predictions is that particles “spontaneously” gain energy at a slow rate. When applied to the excitation of a nucleon in a Ge nucleus, it is shown how a limit on the relative collapse rates of neutron and proton can be obtained, and a rough estimate is made from data. When applied to (...)
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  15.  61
    Dynamical Reduction Theories: Changing Quantum Theory so the Statevector Represents Reality.GianCarlo Ghirardi & Philip Pearle - 1990 - PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1990:19 - 33.
    The propositions, that what we see around us is real and that reality should be represented by the statevector, conflict with quantum theory. In quantum theory, the statevector can readily become a sum of states of comparable norm, each state representing a different reality. In this paper we present the Continuous Spontaneous Localization (CSL) theory, in which a modified Schrodinger equation, while scarcely affecting the dynamics of a microscopic system, rapidly "reduces" the statevector of a macroscopic system to a state (...)
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  16.  61
    Statevector Reduction in Discrete Time: A Random Walk in Hilbert Space. [REVIEW]Akihiro Nakano & Philip Pearle - 1994 - Foundations of Physics 24 (3):363-377.
    A simple model is presented in which the statevector evolves every ε seconds in one of two ways, according to a particular probability rule. It is shown that this random walk in Hilbert space results in reduction of the statevector. It is also shown how the continuous spontaneous localization (CSL) theory of statevector reduction is achieved as a limiting case of this model, exactly as Brownian motion is a limiting case of ordinary random walk. Finally, a slightly different but completely (...)
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  17.  66
    Chronogenesis, Cosmogenesis and Collapse.Philip Pearle - 2013 - Foundations of Physics 43 (6):747-768.
    A simple quantum model describing the onset of time is presented. This is combined with a simple quantum model of the onset of space. A major purpose is to explore the interpretational issues which arise. The state vector is a superposition of states representing different “instants.” The sample space and probability measure are discussed. Critical to the dynamics is state vector collapse: it is argued that a tenable interpretation is not possible without it. Collapse provides a mechanism whereby the universe (...)
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  18.  81
    The CSL Collapse Model and Spontaneous Radiation: An Update.Philip Pearle, James Ring, Juan I. Collar & Frank T. Avignone Iii - 1999 - Foundations of Physics 29 (3):465-480.