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arXiv · hep-ph/9710419

The Octet of Goldstone-Bosons in the SU(3) Linear sigma Model in the QRPA

Z. Aouissat·O. Bohr·J. Wambach.
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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.

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Z. Aouissat, O. Bohr, J. Wambach.. 1999-03-10. The Octet of Goldstone-Bosons in the SU(3) Linear sigma Model in the QRPA. https://doi.org/10.1142/s0217732398001911

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