Quantum field theory with classical sources - Linearized quantum gravity
Artikel i vetenskaplig tidskrift, 2019

In a previous work (Skagerstam 2018 arXiv:1801.09947v1 [quant-ph]) and in terms of an exact quantum-mechanical framework, h-independent causal and retarded expectation values of the second-quantized electro-magnetic fields in the Coulomb gauge were derived in the presence of a conserved classical electric current. The classical h-independent Maxwells equations then naturally emerged. In the present work, we extend these considerations to linear gravitational quantum deviations around a flat Minkowski space-time in a Coulomb-like gauge. The emergence of the classical, causal, and properly retarded linearized classical theory of general relativity with a conserved classical energymomentum tensor is then outlined. The quantum-mechanical framework also provides for a simple approach to classical quadrupole gravitational radiation of Einstein and microscopic spontaneous graviton emission and/or absorption processes.

radiation processes

causality

quantum gravity

classical sources

Författare

Bo Sture K. Skagerstam

Norges teknisk-naturvitenskapelige universitet

Karl-Erik Eriksson

Chalmers, Rymd-, geo- och miljövetenskap, Fysisk resursteori

Per K. Rekdal

Høgskolen i Molde

Classical and Quantum Gravity

0264-9381 (ISSN)

Vol. 36 1 015011

Ämneskategorier

Annan fysik

Fusion, plasma och rymdfysik

Matematisk analys

DOI

10.1088/1361-6382/aaf113

Mer information

Senast uppdaterat

2019-01-08