arXiv:hep-ph/9710419·v2·High Energy Physics — Phenomenology
The Octet of Goldstone-Bosons in the SU(3) Linear sigma Model in the QRPA
Z. Aouissat🇩🇪 · O. Bohr🇩🇪 · J. Wambach. (TU-Darmstadt)🇩🇪
Abstract
A symmetry conserving, non-perturbative treatment based on a variational squeezed vacuum state in conjunction with a well-defined class of RPA fluctuations is applied to the SU(3) linear-sigma-model. It is shown that the Goldstone theorem holds exactly both at zero and finite temperature. The approach represents a systematic procedure which avoids problems of the Gaussian Functional with the symmetries.
Comments: 10 pages