Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Kay, Bernard S."'
Publikováno v:
JCAP 10 (2024) 002
Given a Cauchy surface in a curved spacetime and a suitably defined quantum state on the CCR algebra of the Klein-Gordon quantum field on that surface, we show, by expanding the squared spacetime geodesic distance and the `$U$' and `$V$' Hadamard coe
Externí odkaz:
http://arxiv.org/abs/2406.01498
Autor:
Kay, Bernard S.
The 2023 second edition of a 2006 encyclopedia article on mathematical aspects of quantum field theory in curved spacetimes (QFTCST). Section-titles (with new sections indicated with stars) are: Introduction and preliminaries, Construction of a $*$-a
Externí odkaz:
http://arxiv.org/abs/2308.14517
Autor:
Kay, Bernard S.
Publikováno v:
International Journal of Modern Physics D 32 (14) ( 2023) 2342002
Hawking showed that a black hole formed by collapse will emit radiation and eventually disappear. We address the challenge to define an objective notion of physical entropy which increases throughout this process in a way consistent with unitarity. W
Externí odkaz:
http://arxiv.org/abs/2305.11723
Autor:
Kay, Bernard S.
Since Hawking's 1974 discovery, we expect that a black hole formed by collapse will emit radiation and eventually disappear. Closely related to the information loss puzzle is the challenge to define an objective notion of physical entropy which incre
Externí odkaz:
http://arxiv.org/abs/2206.07445
Publikováno v:
JCAP 01 (2023), 040
We explore how the initial value problem may be formulated for globally hyperbolic, Hadamard, solutions of the semiclassical Einstein-Klein-Gordon equations. Given a set of data on an initial 3-surface, consisting of the values on the surface of a sp
Externí odkaz:
http://arxiv.org/abs/2205.11671
Autor:
Kay, Bernard S.
We present a short account of our work to provide quantum electrodynamics with a 'product picture'. It aims to complement the longer exposition in a recent paper in 'Foundations of Physics' and to help to make that work more accessible. The product p
Externí odkaz:
http://arxiv.org/abs/2204.01177
Autor:
Kay, Bernard S.
Publikováno v:
Foundations of Physics 52:6 (2022)
We provide a theoretical foundation for the notion of the quantum coherent state of the electrostatic field of a static external charge distribution introduced in a 1998 paper and rederive formulae there for the inner products of a pair of such state
Externí odkaz:
http://arxiv.org/abs/2003.07473
Autor:
Kay, Bernard S.
Publikováno v:
In: Finster F., Giulini D., Kleiner J., Tolksdorf J. (eds) Progress and Visions in Quantum Theory in View of Gravity. Birkh\"auser, Cham. (2020)
I recall my 'matter-gravity entanglement hypothesis' and briefly review the evidence for it, based partly on its seeming ability to resolve a number of puzzles related to quantum black holes including the black hole information loss puzzle. I point o
Externí odkaz:
http://arxiv.org/abs/1909.04963
Autor:
Kay, Bernard S.
Publikováno v:
Gen Relativ Gravit (2020) 52: 3
Editorial Note with a mathematical and historical introduction to a 1932 paper by Erwin Schr\"odinger on the generalization of the Dirac equation to a curved spacetime -- to appear in the 'Golden Oldie' section of the Journal of General Relativity an
Externí odkaz:
http://arxiv.org/abs/1906.10765
Autor:
Kay, Bernard S.
Publikováno v:
Foundations of Physics 48 (5), 542-557 (2018)
I outline some of my work (some dating back to 1998, some more recent) on my matter-gravity entanglement hypothesis, according to which the entropy of a closed quantum gravitational system is equal to the system's matter-gravity entanglement entropy.
Externí odkaz:
http://arxiv.org/abs/1802.03635