Note on the point–splitting procedure to evaluate vacuum fluctuation in certain cylindrically symmetric backgrounds
نویسنده
چکیده
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. 04.70.Dy, 04.62.+v Typeset using REVTEX ∗e-mail: [email protected] †e-mail: [email protected] ‡e-mail: [email protected] 1
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