A new method to study lattice QCD at finite temperature and chemical potential

被引:450
作者
Fodor, Z
Katz, SD
机构
[1] DESY, D-22607 Hamburg, Germany
[2] Eotvos Lorand Univ, Inst Theoret Phys, H-1117 Budapest, Hungary
关键词
D O I
10.1016/S0370-2693(02)01583-6
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Due to the sign problem, it is exponentially difficult to study QCD on the lattice at finite chemical potential. We propose a method-an overlap improving multi-parameter reweighting technique-to alleviate this problem. We apply this method and give the phase diagram of four-flavor QCD obtained on lattices 4(4) and 4 x 6(3). Our results are based on O(10(3)-10(4)) configurations. (C) 2002 Published by Elsevier Science B.V.
引用
收藏
页码:87 / 92
页数:6
相关论文
共 30 条
[1]   Color-flavor locking and chiral symmetry breaking in high density QCD [J].
Alford, M ;
Rajagopal, K ;
Wilczek, F .
NUCLEAR PHYSICS B, 1999, 537 (1-3) :443-458
[2]   QCD at finite baryon density: nucleon droplets and color superconductivity [J].
Alford, M ;
Rajagopal, K ;
Wilczek, F .
PHYSICS LETTERS B, 1998, 422 (1-4) :247-256
[3]   Imaginary chemical potential and finite fermion density on the lattice [J].
Alford, M ;
Kapustin, A ;
Wilczek, F .
PHYSICAL REVIEW D, 1999, 59 (05)
[4]   Chiral symmetry restoration and realisation of the Goldstone mechanism in the U(1) Gross-Neveu model at non-zero chemical potential [J].
Barbour, I ;
Hands, S ;
Kogut, JB ;
Lombardo, MP ;
Morrison, S .
NUCLEAR PHYSICS B, 1999, 557 (1-2) :327-351
[5]  
Barbour IM, 1998, NUCL PHYS B, P220, DOI 10.1016/S0920-5632(97)00484-2
[6]   Color superconductivity and chiral symmetry restoration at non-zero baryon density and temperature [J].
Berges, J ;
Rajagopal, K .
NUCLEAR PHYSICS B, 1999, 538 (1-2) :215-232
[7]   HADRON PROPERTIES IN LATTICE QCD WITH DYNAMICAL FERMIONS [J].
BORN, KD ;
LAERMANN, E ;
PIRCH, N ;
WALSH, TF ;
ZERWAS, PM .
PHYSICAL REVIEW D, 1989, 40 (05) :1653-1663
[8]   Meron-cluster solution of fermion sign problems [J].
Chandrasekharan, S ;
Wiese, UJ .
PHYSICAL REVIEW LETTERS, 1999, 83 (16) :3116-3119
[9]   End point of the hot electroweak phase transition [J].
Csikor, F ;
Fodor, Z ;
Heitger, J .
PHYSICAL REVIEW LETTERS, 1999, 82 (01) :21-24
[10]   BINDING OF HOLES IN THE HUBBARD-MODEL [J].
DAGOTTO, E ;
MOREO, A ;
SUGAR, RL ;
TOUSSAINT, D .
PHYSICAL REVIEW B, 1990, 41 (01) :811-814