One-loop correction to classical masses of quantum kink families

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One-loop corrections to kink masses in a family of (1+1)-dimensional field theoretical models with two real scalar fields are computed. A generalized DHN formula applicable to potentials with and without reflection is obtained. It is shown how half-bound states arising in the spectrum of the second order fluctuation operator for one-component topological kinks and the vacuum play a central r$\hat{\rm o}$le in the computation of the kink Casimir energy. The issue of whether or not the kink degeneracy exhibited by this family of models at the classical level survives one-loop quantum fluctuations is addressed.
29 pages, 6 figures. Minor corrections, references added. To appear in Nucl. Phys. B

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High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/197502

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-th/0304125
 http://arxiv.org/abs/hep-th/0304125
 Nucl.Phys.B681:163-194,2004
 doi:10.1016/j.nuclphysb.2004.01.003

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