Casimir effect in the boundary state formalism
High Energy Physics - Theory
2008-11-26 v1 Quantum Physics
Abstract
Casimir effect in the planar setting is described using the boundary state formalism, for general partially reflecting boundaries. It is expressed in terms of the low-energy degrees of freedom, which provides a large distance expansion valid for general interacting field theories provided there is a non-vanishing mass gap. The expansion is written in terms of the scattering amplitudes, and needs no ultraviolet renormalization. We also discuss the case when the quantum field has a nontrivial vacuum configuration.
Cite
@article{arxiv.0801.2836,
title = {Casimir effect in the boundary state formalism},
author = {Z. Bajnok and L. Palla and G. Takacs},
journal= {arXiv preprint arXiv:0801.2836},
year = {2008}
}
Comments
11 pages. Proceedings contribution of talk given at the Workshop on Quantum Field Theory under the Influence of External Conditions (QFEXT07), University of Leipzig, September 16-21, 2007. To appear in J. Phys. A