Artigo
Light-cone fluctuations and the renormalized stress tensor of a massless scalar field
Fecha
2013-01-10Registro en:
International Journal of Modern Physics A, v. 28, n. 1, 2013.
0217-751X
10.1142/S0217751X13500012
WOS:000316813900003
2-s2.0-84872419891
Autor
Universidade Federal de Itajubá (UNIFEI)
Universidade Estadual Paulista (Unesp)
Centro Brasileiro de Pesquisas Físicas (CBPF)
Resumen
We investigate the effects of light-cone fluctuations over the renormalized vacuum expectation value of the stress-energy tensor of a real massless minimally coupled scalar field defined in a (d+1)-dimensional flat space-time with topology R×Td. For modeling the influence of light-cone fluctuations over the quantum field, we consider a random Klein-Gordon equation. We study the case of centered Gaussian processes. After taking into account all the realizations of the random processes, we present the correction caused by random fluctuations. The averaged renormalized vacuum expectation value of the stress-energy associated with the scalar field is presented. © 2013 World Scientific Publishing Company.