Symmetry Breaking and Collisions with $σ$-Mesons

Details Symmetry Breaking and Collisions with $σ$-Mesons Symmetry Breaking and Collisions with $σ$-Mesons

1996-02-29

arxiv.org/abs/hep-ph/9602427v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, LaTeX, three figures available in Postscript from the Author at witte@hybrid.tphys.uni-heidelberg.de

Scientific paper

In this brief report we adress spontaneous symmetry breaking in a finite-temperature scalar meson plasma. We calculate the in-medium averaged thermal $\sigma-\sigma$ scattering crossection and the related shear viscosity $\eta(T)$ and mean-free-path $L(T)$. Our results suggest that slightly below the critical temperature there is a 30 percent peak in the crossection leading to equivalent dips in $\eta(T)$ and $L(T)$. We discuss the relevance of this observation.

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