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Generalized Virasoro anomaly and stress tensor for dilaton coupled theories

Repositori DSpace/Manakin

dc.contributor.author	Fabbri, Alessandro
dc.contributor.author	Farese, Sara
dc.contributor.author	Navarro Salas, José
dc.date.accessioned	2014-03-29T10:23:30Z
dc.date.available	2014-03-29T10:23:30Z
dc.date.issued	2003
dc.identifier.citation	Fabbri, Alessandro Farese, Sara Navarro Salas, José 2003 Generalized Virasoro anomaly and stress tensor for dilaton coupled theories Physics Letters B 574 3-4 309 318
dc.identifier.uri	http://hdl.handle.net/10550/33780
dc.description.abstract	We derive the anomalous transformation law of the quantum stress tensor for a 2D massless scalar field coupled to an external dilaton. This provides a generalization of the Virasoro anomaly which turns out to be consistent with the trace anomaly. We apply it together with the equivalence principle to compute the expectation values of the covariant quantum stress tensor on a curved background. Finally we briefly illustrate how to evaluate vacuum polarization and Hawking radiation effects from these results.
dc.relation.ispartof	Physics Letters B, 2003, vol. 574, num. 3-4, p. 309-318
dc.subject	Astrofísica
dc.title	Generalized Virasoro anomaly and stress tensor for dilaton coupled theories
dc.type	journal article	es_ES
dc.date.updated	2014-03-29T10:23:31Z
dc.identifier.doi	10.1016/j.physletb.2003.09.012
dc.identifier.idgrec	081966
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1016/j.physletb.2003.09.012