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Author
del Rio, A.
;
Navarro-Salas, J.
Title
Equivalence of adiabatic and DeWitt-Schwinger renormalization schemes
Type
Journal Article
Year
2015
Publication
Physical Review D
Abbreviated Journal
Phys. Rev. D
Volume
91
Issue
6
Pages
064031 - 14pp
Keywords
Abstract
We prove that adiabatic regularization and DeWitt-Schwinger point-splitting provide the same result when renormalizing expectation values of the stress-energy tensor for spin-1/2 fields. This generalizes the equivalence found for scalar fields, which is here recovered in a different way. We also argue that the coincidence limit of the DeWitt-Schwinger proper time expansion of the two-point function agrees exactly with the analogous expansion defined by the adiabatic regularization method at any order (for both scalar and spin-1/2 fields). We also illustrate the power of the adiabatic method to compute higher order DeWitt coefficients in Friedmann-Lemaitre-Robertson-Walker Universes.
Address
[del Rio, Adrian; Navarro-Salas, Jose] Univ Valencia, Dept Fis Teor, IFIC, Ctr Mixto,CSIC,Fac Fis, E-46100 Valencia, Spain, Email: adrian.rio@uv.es;
Corporate Author
Thesis
Publisher
Amer Physical Soc
Place of Publication
Editor
Language
English
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
1550-7998
ISBN
Medium
Area
Expedition
Conference
Notes
WOS:000350966000005
Approved
no
Is ISI
yes
International Collaboration
no
Call Number
IFIC @ pastor @
Serial
2150
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