Casimir energy corrections by light-cone fluctuations

• Autor(a) principal: Arias, E.
• Data de Publicação: 2014
• Outros Autores: Dueñas, J. G., Svaiter, N. F., Bessa, C. H.G., Menezes, G. [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1142/S0217751X14500249; http://hdl.handle.net/11449/227587
• topic: Casimir energy; Quantum fields in curved space-time; Wave propagation in random media

We study the effects of light-cone fluctuations on the renormalized zero-point energy associated with a free massless scalar field in the presence of boundaries. In order to simulate light-cone fluctuations, we introduce a space-time dependent random coefficient in the Klein-Gordon operator. We assume that the field is defined in a domain with one confined direction. For simplicity, we choose the symmetric case of two parallel plates separated by a distance a. The correction to the renormalized vacuum energy density between the plates goes as 1/a8 instead of the usual 1/a4 dependence for the free case. In turn, we also show that light-cone fluctuations break down the vacuum pressure homogeneity between the plates. © 2014 World Scientific Publishing Company.