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200120 ||| eng |
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|a 9783030110000
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|a Smith, Alexander R. H.
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|a Detectors, Reference Frames, and Time
|h Elektronische Ressource
|c by Alexander R. H. Smith
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|a 1st ed. 2019
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| 260 |
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|a Cham
|b Springer International Publishing
|c 2019, 2019
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| 300 |
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|a XIX, 167 p. 25 illus., 23 illus. in color
|b online resource
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|a Chapter1. Introduction -- Part1: Detectors in Curved Spacetimes -- Chapter2. Quantum Field Theory on Curved Spacetimes -- Chapter3. The Unruh-DeWitt Detector and Entanglement Harvesting -- Chapter4. Unruh-DeWitt Detectors in Quotients of Minkowski Space -- Chapter5. Unruh-DeWitt Detectors in (2+1)-dimensional Black Hole Spacetimes -- Part2: Quantum Reference Frames -- Chapter6. Quantum reference frames associated with noncompact groups -- Chapter7. Communication without a shared reference frame -- Part3: Quantizing Time -- Chapter8. The conditional probability interpretation of time
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| 653 |
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|a Quantum Physics
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| 653 |
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|a Cosmology
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| 653 |
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|a Quantum field theory
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| 653 |
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|a Gravitation
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| 653 |
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|a Elementary particles (Physics)
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| 653 |
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|a Mathematical Physics
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| 653 |
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|a Elementary Particles, Quantum Field Theory
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| 653 |
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|a Quantum physics
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| 653 |
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|a Mathematical physics
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| 653 |
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|a Classical and Quantum Gravity
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| 041 |
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7 |
|a eng
|2 ISO 639-2
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| 989 |
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|b Springer
|a Springer eBooks 2005-
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| 490 |
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|a Springer Theses, Recognizing Outstanding Ph.D. Research
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| 028 |
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|a 10.1007/978-3-030-11000-0
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| 856 |
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|u https://doi.org/10.1007/978-3-030-11000-0?nosfx=y
|x Verlag
|3 Volltext
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|a 530.1
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|a This thesis uses the tools of quantum information science to uncover fascinating new insights about the intersection of quantum theory and relativity. It is divided into three self-contained parts, the first of which employs detector models to investigate how the information content of quantum fields depends on spacetime curvature and global spacetime topology. The behavior of Unruh-DeWitt detectors on curved spacetimes are investigated, following which these detectors are used to probe the vacuum state of a scalar field in various topologies. This leads to a generalization of the entanglement harvesting protocol involving detectors in arbitrary curved spacetimes admitting a Wightman function. The second part extends the theory of quantum reference frames to those associated with noncompact groups. Motivated by the pursuit of a relational relativistic quantum theory where the group of reference frames is the Poincaré group, the author then generalizes a communication protocol between two parties lacking a common reference frame to the scenario where the group of transformations of their reference frame is a one-dimensional noncompact Lie group. Finally, the third part, inspired by theories of quantum gravity, generalizes the conditional probability interpretation of time, a proposed mechanism for time to emerge from a fundamentally timeless Universe. While the conditional probability interpretation of time is based upon conditioning a solution to the Wheeler-DeWitt equation on a subsystem of the universe that acts a clock, the author extends this approach to include an interaction between the system being used as a clock and a system whose evolution the clock is tracking.
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