Validity of the kink approximation to the tunneling actionReportar como inadecuado



 Validity of the kink approximation to the tunneling action


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Coleman tunneling in a general scalar potential with two non-degenerate minima is known to have an approximation in terms of a piecewise linear triangular-shaped potential with sharp kinks at the place of the local minima. This approximate potential has a regime where the existence of the bounce solution needs the scalar field to wait for some amount of Euclidean time at one of the kinks. We discuss under which conditions a kink approximation of locally smooth cap regions provides a good estimate for the bounce action.



Autor: Koushik Dutta; Cecelie Hector; Thomas Konstandin; Pascal M. Vaudrevange; Alexander Westphal

Fuente: https://archive.org/







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