Pion and Eta Strings

Details Pion and Eta Strings Pion and Eta Strings

1997-11-24

arxiv.org/abs/hep-ph/9711452v1

Phys.Rev. D58 (1998) 027702

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, LATEX

Scientific paper

10.1103/PhysRevD.58.027702

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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