The heat kernel expansion for the electromagnetic field in a cavity
arXiv:math-ph/0302035 · doi:10.1007/s00023-003-0153-5
Abstract
We derive the first six coefficients of the heat kernel expansion for the electromagnetic field in a cavity by relating it to the expansion for the Laplace operator acting on forms. As an application we verify that the electromagnetic Casimir energy is finite.
12 pages
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