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Casimir pressure at two loops and soft boundaries at finite temperature
Phys. Rev. D 55, 7754 – Published 15 June, 1997
DOI: https://doi.org/10.1103/PhysRevD.55.7754
Abstract
The first order Casimir pressure is computed in the theory. Some peculiar results in odd space-times dimensions are noticed. Namely, the first-order pressure is beset by a divergence, proportional to the inverse of the distance between the plates. Hence, Dirichlet boundary conditions render the theory nonrenormalizable at two loops. In order to understand this peculiar feature of odd dimensions we generalize a recent proposal to “soften” the hard Dirichlet walls. However, in its simplest form it does not solve the renormalization problem found in .
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