The boundary of the first order chiral phase transition in the m_pi-m_K--plane with a linear sigma model

Details The boundary of the first order chiral phase transition in the m_pi-m_K--plane with a linear sigma model The boundary of the first order chiral phase transition in the m_pi-m_K--plane with a linear sigma model

2006-08-30

arxiv.org/abs/hep-ph/0608318v1

Nucl.Phys.A785:174-177,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure, uses espcrc1.sty; to appear in the proceedings of Strong and Electroweak Matter 2006 (SEWM06), BNL, May 200

Scientific paper

10.1016/j.nuclphysa.2006.11.060

Tree-level and complete one-loop parametrisation of the linear sigma model (LSM) is performed and the phase boundary between first order and crossover transition regions of the m_pi-m_K-plane is determined using the optimised perturbation theory (OPT) as a resummation tool of perturbative series. Away from the physical point the parameters of the model were determined by making use of chiral perturbation theory (ChPT). The location of the phase boundary for m_pi=m_K and of the tricritical point (TCP) on the m_pi=0 were estimated.

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