Lattice QCD at finite isospin chemical potential and temperature.
- Resource Type
- Conference
- Authors
- Source
- 119; Conference: 20th International Symposium on Lattice Field Theory (LATTICE 2002), Boston, MA (US), 06/24/2002--06/29/2002; Other Information: PBD: 8 Oct 2002; PBD: 8 Oct 2002
- Subject
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CONDENSATES
HEATING
ISOSPIN
LATTICE FIELD THEORY
PIONS
QUANTUM CHROMODYNAMICS
- Language
- English
- ISSN
- 0920-5632
We simulate lattice QCD at a finite chemical potential {mu}{sub I} for isospin (I{sub 3}) at zero and finite temperatures. At some {mu}{sub I} = {mu}c QCD has a second order transition with mean-field critical exponents to a state where (I{sub 3}) is broken spontaneously by a charged pion condensate. Heating the system with {mu}{sub I} > {mu}{sub c} we find there is some temperature at which this condensate evaporates. This transition appears to be second order and mean-field at lower {mu}{sub I} values, and first order for {mu}{sub I} sufficiently large. We are determining the dependence of the finite temperature crossover T{sub c} on {mu}{sub I} for {mu}{sub I} < {mu}{sub c}. This is expected to be identical to T{sub c}'s dependence on quark-number chemical potential {mu}{sub q} for small {mu}{sub q}.