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arXiv · hep-ph/9711452

Pion and Eta Strings

Xinmin Zhang·Tao Huang·Robert H. Brandenberger
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Abstract

In this paper we construct a string-like classical solution, the pion-string, in the linear sigma model. We then study the stability of the pion-string, and find that it is unstable in the parameter space allowed experimentally. We also speculate on the existance of an unstable eta-string, associated with spontaneous breakdown of the anomalous $U_A(1)$ symmetry in QCD at high temperatures. The implications of the pion and eta strings for cosmology and heavy ion collisions are briefly mentioned.

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Xinmin Zhang, Tao Huang, Robert H. Brandenberger. 1997-11-24. Pion and Eta Strings. https://doi.org/10.1103/physrevd.58.027702

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