A tensorial description of particle perception in black-hole physics

DOI: 
10.1103/PhysRevD.94.064004
Publication date: 
01/09/2016
Main author: 
Barbado, Luis C.
IAA authors: 
Barbado, Luis C.;Barceló, Carlos
Authors: 
Barbado, Luis C.;Barceló, Carlos;Garay, Luis J.;Jannes, G.
Journal: 
Physical Review D
Refereed: 
Yes
Publication type: 
Article
Volume: 
94
Pages: 
064004
Abstract: 
In quantum field theory in curved backgrounds, one typically distinguishes between objective, tensorial quantities such as the renormalized stress-energy tensor (RSET) and subjective, nontensorial quantities such as Bogoliubov coefficients which encode perception effects associated with the specific trajectory of a detector. In this work, we propose a way to treat both objective and subjective notions on an equal tensorial footing. For that purpose, we define a new tensor which we will call the perception renormalized stress-energy tensor (PeRSET). The PeRSET is defined as the subtraction of the RSET corresponding to two different vacuum states. Based on this tensor, we can define perceived energy densities and fluxes. The PeRSET helps us to have a more organized and systematic understanding of various results in the literature regarding quantum field theory in black hole spacetimes. We illustrate the physics encoded in this tensor by working out various examples of special relevance.
Database: 
ADS
WOK
SCOPUS
URL: 
https://ui.adsabs.harvard.edu/#abs/2016PhRvD..94f4004B/abstract
ADS Bibcode: 
2016PhRvD..94f4004B
Keywords: 
General Relativity and Quantum Cosmology