Generalized Virasoro anomaly and stress tensor for dilaton coupled theories
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Generalized Virasoro anomaly and stress tensor for dilaton coupled theories

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Generalized Virasoro anomaly and stress tensor for dilaton coupled theories

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Fabbri, Alessandro; Farese, Sara; Navarro Salas, José Perfil
This document is a artículoDate2003

Este documento está disponible también en : http://dx.doi.org/10.1016/j.physletb.2003.09.012

Este documento está disponible también en : http://hdl.handle.net/10550/33780
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.

    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
http://dx.doi.org/10.1016/j.physletb.2003.09.012

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