INVESTIGADORES
LOPEZ NACIR Diana Laura
artículos
Título:
ON THE RENORMALIZATION PROCEDURE FOR QUANTUM FIELDS WITH MODIFIED DISPERSION RELATIONS IN CURVED SPACETIMES
Autor/es:
D. LÓPEZ NACIR; F. D. MAZZITELLI
Revista:
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
Editorial:
Board
Referencias:
Año: 2009 vol. 24 p. 1565 - 1569
ISSN:
0217-751X
Resumen:
We review our recent results on the renormalization procedure for a free quantum scalar field with modified dispersion relations in curved spacetimes. For dispersion relations containing up to 2s powers of the spatial momentum, the subtraction necessary to renormalize \langle \phi^2\rangle and \langle T_{\mu\nu}\rangle depends on s. We first describe our previous analysis for spatially flat Friedman-Robertson-Walker and Bianchi type I metrics. Then we present a new power counting analysis for general background metrics in the weak field approximation.
