Weyling the time away: The non-unitary implementability of quantum field dynamics on curved spacetime

Abstract
The simplest case of quantum field theory on curved spacetime-that of the Klein-Gordon field on a globally hyperbolic spacetime-reveals a dilemma: In generic circumstances, either there is no dynamics for this quantum field, or else there is a dynamics that is not unitarily implementable. We do not try to resolve the dilemma here, but endeavour to spell out the consequences of seizing one or the other horn of the dilemma.
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DOI 10.1016/S1355-2198(02)00006-0
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References found in this work BETA
Are Rindler Quanta Real? Inequivalent Particle Concepts in Quantum Field Theory.Rob Clifton & Hans Halvorson - 2001 - British Journal for the Philosophy of Science 52 (3):417-470.
The Hawking Information Loss Paradox: The Anatomy of a Controversy.Gordon Belot, John Earman & Laura Ruetsche - 1999 - British Journal for the Philosophy of Science 50 (2):189-229.

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Citations of this work BETA
The Fate of 'Particles' in Quantum Field Theories with Interactions.Doreen Fraser - 2007 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 39 (4):841-859.
Against Field Interpretations of Quantum Field Theory.David Baker - 2009 - British Journal for the Philosophy of Science 60 (3):585-609.
Explaining Quantum Spontaneous Symmetry Breaking.Chuang Liu & Gerard G. Emch - 2005 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 36 (1):137-163.
Primitive Ontology and Quantum Field Theory.Vincent Lam - 2015 - European Journal for Philosophy of Science 5 (3):387-397.

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