The critical surface of the $SU(3)_L$ x $SU(3)_R$ chiral quark model at non-zero baryon density - INSPIRE

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The critical surface of the $SU(3)_L$ x $SU(3)_R$ chiral quark model at non-zero baryon density

P. Kovacs
(
- Eotvos U.
)
,
Zs. Szep
(
- Budapest, RISSP
)

Nov, 2006

10 pages

Published in:

Phys.Rev.D 75 (2007) 025015

e-Print:

hep-ph/0611208 [hep-ph]

DOI:

10.1103/PhysRevD.75.025015

View in:

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Abstract:

The boundary of the first order chiral phase transition region is studied in the m_pi-m_K-mu_B space using the one-loop optimized perturbation theory for the resummation of the perturbative series. Chiral perturbation theory for mesons and baryons is used for the T=0 parametrization of the model. The surface of second order transition points bends with increasing mu_B towards the physical point of the m_pi-m_K mass plane allowing for the existence of the critical end point in the mu_B-T plane at the physical point. The location and scaling region of the CEP is explored.

11.30.Rd
12.39.Fe
11.10.Wx
quark model: chiral
symmetry: SU(3) x SU(3)
critical phenomena
pi: mass
K: mass
potential: chemical
baryon: density

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