Renormalized Stress Tensor for trans-Planckian Cosmology

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Finite expressions for the mean value of the stress tensor corresponding to a scalar field with a generalized dispersion relation in a Friedman--Robertson--Walker universe are obtained using adiabatic renormalization. Formally divergent integrals are evaluated by means of dimensional regularization. The renormalization procedure is shown to be equivalent to a redefinition of the cosmological constant and the Newton constant in the semiclassical Einstein equations.
14 pages. Minor changes; version published in Physical Review D

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General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology, High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/104443

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/gr-qc/0511046
 http://arxiv.org/abs/gr-qc/0511046
 Phys.Rev. D72 (2005) 124013
 doi:10.1103/PhysRevD.72.124013

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