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Equivalence of adiabatic and DeWitt-Schwinger renormalization schemes

Repositori DSpace/Manakin

dc.contributor.author	Del Río Vega, Adrián
dc.contributor.author	Navarro Salas, José
dc.date.accessioned	2015-06-18T10:38:42Z
dc.date.available	2015-06-18T10:38:42Z
dc.date.issued	2015
dc.identifier.citation	Del Río Vega, Adrián Navarro Salas, José 2015 Equivalence of adiabatic and DeWitt-Schwinger renormalization schemes Physical Review D 91 6 064031-1 064031-14
dc.identifier.uri	http://hdl.handle.net/10550/44440
dc.description.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.
dc.language.iso	eng
dc.relation.ispartof	Physical Review D, 2015, vol. 91, num. 6, p. 064031-1-064031-14
dc.subject	Física
dc.title	Equivalence of adiabatic and DeWitt-Schwinger renormalization schemes
dc.type	journal article	es_ES
dc.date.updated	2015-06-18T10:38:42Z
dc.identifier.doi	10.1103/PhysRevD.91.064031
dc.identifier.idgrec	103062
dc.rights.accessRights	open access	es_ES