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Tracy Lupher
James Madison University
  1.  6
    The Limits of Physical Equivalence in Algebraic Quantum Field Theory.Tracy Lupher - 2018 - British Journal for the Philosophy of Science 69 (2):553-576.
    Some physicists and philosophers argue that unitarily inequivalent representations in quantum field theory are mathematical surplus structure. Support for that view, sometimes called ‘algebraic imperialism’, relies on Fell’s theorem and its deployment in the algebraic approach to QFT. The algebraic imperialist uses Fell’s theorem to argue that UIRs are ‘physically equivalent’ to each other. The mathematical, conceptual, and dynamical aspects of Fell’s theorem will be examined. Its use as a criterion for physical equivalence is examined in detail and it is (...)
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  2.  51
    A Physical Critique of Physical Causation.Tracy Lupher - 2009 - Synthese 167 (1):67 - 80.
    The conserved quantities theory of causation (CQTC) attempts to use physics as the basis for an account of causation. However, a closer examination of the physics involved in CQTC reveals several critical failures. Some of the conserved quantities in physics cannot be used to distinguish causal interactions. Other conserved quantities cannot always be the properties of fields or particles. Finally, CQCT does not account for causal interactions that are static.
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  3.  46
    Not Quite Particles, Not Quite Fields.Tracy Lupher - 2010 - Humana Mente 13:155-173.
    There are significant problems involved in determining the ontology of quantum field theory (QFT). An ontology involving particles seems to be ruled out due to the problem of defining localized position operators, issues involving interactions in QFT, and, perhaps, the appearance of unitarily inequivalent representations. While this might imply that fields are the most natural ontology for QFT, the wavefunctional interpretation of QFT has significant drawbacks. A modified field ontology is examined where determinables are assigned to open bounded regions of (...)
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  4.  63
    John von Neumann and the Foundations of Quantum Physics. [REVIEW]Tracy Lupher - 2003 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 34 (4):684-687.
  5.  14
    The Limits of Physical Equivalence in Algebraic Quantum Field Theory.Tracy Lupher - 2016 - British Journal for the Philosophy of Science:axw017.
    Some physicists and philosophers argue that unitarily inequivalent representations in quantum field theory are mathematical surplus structure. Support for that view, sometimes called ‘algebraic imperialism’, relies on Fell’s theorem and its deployment in the algebraic approach to QFT. The algebraic imperialist uses Fell’s theorem to argue that UIRs are ‘physically equivalent’ to each other. The mathematical, conceptual, and dynamical aspects of Fell’s theorem will be examined. Its use as a criterion for physical equivalence is examined in detail and it is (...)
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  6.  26
    A Logical Choice.Tracy Lupher - 2012 - Southwest Philosophy Review 28 (1):237-246.
    It is usually assumed that the modal ontological argument is valid. However, the logical system in which the argument is analyzed can require different assumptions to secure validity. Some strategies for the both critics and proponents of the modal ontological argument are examined in different logical systems. For agnostics, statements involving a perfect being may have a truth value other than true or false. A many-valued modal logic may be a more suitable framework for agnostics, and the modal ontological argument (...)
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    Waving at Schrödinger.Tracy Lupher - 2009 - Metascience 18 (3):463-467.
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  8. A Logical Choice: The Role of Modal Logics in the Modal Ontological Argument.Tracy Lupher - 2012 - Southwest Philosophy Review 28 (1):237-246.
    It is usually assumed that the modal ontological argument is valid. However, the logical system in which the argument is analyzed can require different assumptions to secure validity. Some strategies for the both critics and proponents of the modal ontological argument are examined in different logical systems. For agnostics, statements involving a perfect being may have a truth value other than true or false. A many-valued modal logic may be a more suitable framework for agnostics, and the modal ontological argument (...)
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  9. Theories or Models? : The Case of Algebraic Quantum Field Theory.Tracy Lupher - 2011 - In Paul Humphreys & Cyrille Imbert (eds.), Models, Simulations, and Representations. Routledge.
     
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