Non-Abelian Global Strings at Chiral Phase Transition
Abstract
We construct non-Abelian global string solutions in the U(N)L x U(N)R linear sigma model. These strings are the most fundamental objects which are expected to form during the chiral phase transitions, because the Abelian eta' string is marginally decomposed into N of them. We point out Nambu-Goldstone modes of CPN-1 for breaking of U(N)V arise around a non-Abelian vortex.
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