ar X iv : h ep - l at / 9 90 70 04 v 1 1 1 Ju l 1 99 9 The Role of the Polyakov loop in Finite Density QCD

ar X iv : h ep - l at / 9 90 70 04 v 2 2 2 Se p 19 99 The Role of the Polyakov loop in Finite Density QCD

We study the behavior of the fermion determinant at finite temperature and chemical potential, as a function of the Polyakov loop. The phase of the determinant is correlated with the imaginary part of the Polyakov loop. This correlation and its consequences are considered in static QCD, in a toy model of free quarks in a constant A 0 background, and in simulations constraining the imaginary par...

ar X iv : h ep - l at / 9 90 50 22 v 1 1 8 M ay 1 99 9 BI - TP 99 / 13 MAY 1999 LATTICE QCD AT NON - ZERO BARYON NUMBER

We discuss the quenched limit of lattice QCD at non-zero baryon number density. We find evidence for a mixed phase that becomes broader with increasing baryon number. Although the action is explicitly Z(3) symmetric the Polyakov loop expectation value becomes non-zero already in the low temperature phase. It indicates that the heavy quark potential stays finite at large distances, i.e. the stri...

ar X iv : h ep - l at / 9 80 70 28 v 1 1 1 Ju l 1 99 8 COURSE INTRODUCTION TO LATTICE QCD

ar X iv : h ep - l at / 9 90 70 25 v 1 2 9 Ju l 1 99 9 Interquark potential , susceptibilities and particle density of two color QCD at finite chemical potential and temperature

We explore the phase diagram of SU(2) Lattice Gauge Theory with dy-namical fermions in the temperature, mass, chemical potential space. We observe qualitative changes of the dependence of the particle density on µ and T , which is compatible with that expected of a gas of free massless quarks n ∝ µ 3 only for T ≃ T c. At the onset for thermodynamics the interquark potential flattens at large se...

ar X iv : h ep - l at / 9 60 70 64 v 1 2 6 Ju l 1 99 6

We present results from magnetic monopoles in SU (2) lattice gauge theory at finite temperature. The lattices are 16 3 × N t , for N t = 4, 6, 8, 12, at β = 2.5115. Quantities discussed are: the spacial string tension, Polyakov loops, and the screening of timelike and spacelike magnetic currents.