Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1998-11-26
Phys.Lett. B453 (1999) 275-280
Physics
High Energy Physics
High Energy Physics - Lattice
16 pages, 5 figures
Scientific paper
10.1016/S0370-2693(99)00372-X
QCD at finite chemical potential is analytically investigated in the region of large bare fermion masses. We show that, contrary to the general wisdom, the phase of the fermion determinant is irrelevant at zero temperature. However if the system is put at finite temperature, the contribution of the phase is finite. We also discuss on the quenched approximation and suggest that the origin of the failure of this approximation in finite density QCD could relay on the fundamental role that Pauli exclusion principle plays in this case.
Aloisio Roberto
Azcoiti Vicente
Carlo Giuseppe Di
Galante Angelo
Grillo Aurelio F.
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