A note on the Casimir energy of a massive scalar field in positive curvature space

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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6 pages, no figures

Scientific paper

10.1142/S0217732304012836

We re-evaluate the zero point Casimir energy for the case of a massive scalar field in $\mathbf{R}^{1}\times\mathbf{S}^{3}$ space, allowing also for deviations from the standard conformal value $\xi =1/6$, by means of zero temperature zeta function techniques. We show that for the problem at hand this approach is equivalent to the high temperature regularization of the vacuum energy, as conjectured in a previous publication. Two different, albeit equally valid, ways of doing the analytic continuation are described.

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