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

Z. Fodor, S.D. Katz
2002 Physics Letters B  
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 4·6^3. Our results are based on O(10^3-10^4) configurations.
doi:10.1016/s0370-2693(02)01583-6 fatcat:rm5i24gt3vbadguwylz5mnmsyu