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Author Borsanyi, Sz ♦ Patkos, A. ♦ Szep, Zs
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 1999-09-22
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword High Energy Physics - Phenomenology ♦ physics:hep-ph
Abstract We have calculated the damping rate $\Gamma ( {\bf k} )$ for classical on-shell Goldstone modes of the O(2) symmetric scalar fields propagating in a thermal medium of the broken symmetry phase taking into account the effect of the explicit symmetry breaking. The result of the one-loop analysis can be expanded around $\Gamma (0)$, which depends non-analytically on the parameter of the explicit symmetry breaking, h. $\Gamma (0)$ vanishes when $h\to 0$, demonstrating in this way the absence of the restoring force, when the equilibrium direction of the symmetry breaking is modulated homogeneously.
Description Reference: Phys.Lett. B469 (1999) 188-192
Educational Use Research
Learning Resource Type Article
Page Count 8


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