Repulsive Casimir force in Bose-Einstein Condensate
Statistical Mechanics
2018-04-09 v1 Mathematical Physics
math.MP
Abstract
We study the Casimir effect for a three dimensional system of ideal free massive Bose gas in a slab geometry with Zaremba and anti-periodic boundary conditions. It is found that for these type of boundary conditions the resulting Casimir force is repulsive in nature, in contrast with usual periodic, Dirichlet or Neumann boundary condition where the Casimir force is attractive (Martin P. A. and Zagrebnov V. A., Europhys. Lett., 73 (2006) 15.). Casimir forces in these boundary conditions also maintain a power law decay function below condensation temperature and exponential decay function above the condensation temperature albeit with a positive sign, identifying the repulsive nature of the force.
Keywords
Cite
@article{arxiv.1712.08200,
title = {Repulsive Casimir force in Bose-Einstein Condensate},
author = {Mir Mehedi Faruk and Shovon Biswas},
journal= {arXiv preprint arXiv:1712.08200},
year = {2018}
}