Note on the point-splitting procedure to evaluate vacuum fluctuation in certain cylindrically symmetric backgrounds
I. Brevik, G. E. A. Matsas, E. S. Moreira
Abstract
We revisit two-point function approaches used to study vacuum fluctuation in wedge-shaped regions and conical backgrounds. Appearance of divergent integrals is discussed and circumvented. The issue is considered in the context of a massless scalar field in cosmic string spacetime.
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