Renormalized Stress Tensor for trans-Planckian Cosmology
arXiv:gr-qc/0511046 · doi:10.1103/PhysRevD.72.124013
Abstract
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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Cited by in corpus (11)
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