Pion Velocity near the Chiral Phase Transition

preprint2004arXivOpen access

Abstract

We focus on the pion velocity at the critical temperature and study the quantum and hadronic thermal effects based on the vector manifestation (VM). We show the non-renormalization property on the pion velocity vπv_π, which is protected by the VM, and estimate the value of vπv_π to be close to the speed of light.

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