Lattice QCD at finite isospin chemical potential and temperature

✍ Scribed by J.B. Kogut; D.K. Sinclair

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 251 KB
• Volume: 119
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)80456-5

✦ Synopsis

We simulate lattice QCD at a finite chemical potential ~1 for isospin (1s) at zero and finite temperatures. At some ~1 = pc QCD has a second order transition with mean-field critical exponents to a state where ( 13) is broken spontaneously by a charged pion condensate. Heating the system with PI > /I~ we find there is some temperature at which this condensate evaporates. This transition appears to be second order and mean-field at lower ~1 values, and first order for ~1 sufficiently large. We are determining the dependence of the finite temperature crossover T, on ~11 for ~1 < pc. This is expected to be identical to Tc's dependence on quark-number chemical potential ~1~ for small ~1~.