منابع مشابه
Finite Density QCD in the Chiral Limit
Finite Density QCD in the Chiral Limit R. Aloisio, V. Azcoiti G. Di Carlo, A. Galantea,c∗, A.F. Grillo Dipartimento di Fisica, Universitá dell’Aquila, via Vetoio, 67100 L’Aquila, Italy Departamento de F́isica Teórica, Facultad de Ciencias,Universidad de Zaragoza,50009 Zaragoza,Spain Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, P.O.B. 13, 00044 Frascati, Italy Istituto...
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This talk contains an analysis of quenched chiral perturbation theory and its consequences. The chiral behavior of a number of quantities such as the pion mass m 2 , the Bernard-Golterman ratios R and , the masses of nucleons, and the kaon B-parameter are examined to see if the singular terms induced by the additional Goldstone boson, 0 , are visible in present data. The overall conclusion (dii...
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It has been a big challenge for lattice QCD to simulate dynamical quarks near the chiral limit. Theoretically, it is well-known that the naive chiral symmetry cannot be realized on the lattice (the Nielsen-Ninomiya theorem). Also practically, the computational cost rapidly grows as the quark mass is reduced. The JLQCD collaboration started a project to perform simulations with exact but modifie...
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A mean field analysis of finite density QCD is presented including the effects of additional chiral invariant four-fermion interactions. A lattice regularization is used with Nf = 4 flavors of staggered fermions. The use of the fourfermion coupling as an improved extrapolation parameter over the bare quark mass in Monte Carlo simulations is discussed. Particular attention is given to the struct...
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At sufficiently high temperature and density, quantum chromodynamics (QCD) predicts phase transition from the hadronic phase to the quark-gluon plasma phase. Lattice QCD is the most useful tool to investigate this critical phenomenon, which status is briefly reviewed. The usual problem in the Lagrangian formulation at finite density is either an incorrect continuum limit or its complex action a...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1998
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(97)00796-2