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Quantum-First Gravity
Giddings, Steven B.
Foundations of physics, 2019-03, Vol.49 (3), p.177-190
[Periódico revisado por pares]
New York: Springer US
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Título:
Quantum-First Gravity
Autor:
Giddings, Steven B.
Assuntos:
Classical and Quantum Gravitation
;
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
;
Classical Mechanics
;
Field theory
;
Gauge invariance
;
Gravitation theory
;
Gravitational fields
;
Hilbert space
;
History and Philosophical Foundations of Physics
;
locality
;
Localization
;
Mathematical analysis
;
Philosophy of Science
;
Physics
;
Physics and Astronomy
;
Quantum field theory
;
quantum gravity
;
Quantum mechanics
;
Quantum Physics
;
Quantum theory
;
Relativity
;
Relativity Theory
;
separability
;
Statistical Physics and Dynamical Systems
;
Subspaces
;
Subsystems
;
Tensors
É parte de:
Foundations of physics, 2019-03, Vol.49 (3), p.177-190
Notas:
SC0011702
USDOE Office of Science (SC), High Energy Physics (HEP)
Descrição:
This paper elaborates on an intrinsically quantum approach to gravity, which begins with a general framework for quantum mechanics and then seeks to identify additional mathematical structure on Hilbert space that is responsible for gravity and other phenomena. A key principle in this approach is that of correspondence: this structure should reproduce spacetime, general relativity, and quantum field theory in a limit of weak gravitational fields. A central question is that of “Einstein separability,” and asks how to define mutually independent subsystems, e.g. through localization. Familiar definitions involving tensor products or operator subalgebras do not clearly accomplish this in gravity, as is seen in the correspondence limit. Instead, gravitational behavior, particularly gauge invariance, suggests a network of Hilbert subspaces related via inclusion maps, contrasting with other approaches based on tensor-factorized Hilbert spaces. Any such localization structure is also expected to place strong constraints on evolution, which are also supplemented by the constraint of unitarity.
Editor:
New York: Springer US
Idioma:
Inglês
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