Abstract
We propose a procedure for calculating heat kernel coefficients and use it to derive the expression for any heat kernel coefficient B i for an arbitrary profile of the throat. We give an explicit form of these coefficients up to B 3. We study domains of possible existence of wormholes for different values of the throat length-to-radius ratio and a nonminimal coupling constant.
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Khusnutdinov, N.R. Semiclassical Wormholes with a Smooth Throat. Theoretical and Mathematical Physics 138, 250–268 (2004). https://doi.org/10.1023/B:TAMP.0000015072.58252.19
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DOI: https://doi.org/10.1023/B:TAMP.0000015072.58252.19