Lattice QCD at finite isospin density and / or temperature

Kogut, J.B.; Sinclair, D.K.

doi:10.1016/S0920-5632(03)02635-5

Lattice QCD at finite isospin density and / or temperature

J.B. Kogut
(
- Illinois U., Urbana
)
,
D.K. Sinclair
(
- Argonne
)

Sep, 2003

3 pages

Part of Lattice field theory. Proceedings, 21st International Symposium, Lattice 2003, Tsukuba, Japan, July 15-19, 2003, 542-544

Published in:

Nucl.Phys.B Proc.Suppl. 129 (2004) 542-544

Contribution to:

21st International Symposium on Lattice Field Theory (LATTICE 2003), 542-544

e-Print:

hep-lat/0309042 [hep-lat]

DOI:

10.1016/S0920-5632(03)02635-5

Report number:

ANL-HEP-CP-03-77

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Abstract: (arXiv)

We simulate two-flavour lattice QCD with at a finite chemical potential

\mu_I

for isospin, and finite temperature. At small

\mu_I

, we determine the position of the crossover from hadronic matter to a quark-gluon plasma as a function of

\mu_I

. At larger

\mu_I

we observe the phase transition from the superfluid pion-condensed phase to a quark-gluon plasma, noting its change from second order to first order as

\mu_I

is increased. We also simulate two-flavour lattice QCD at zero quark mass, using an action which includes an additional 4-fermion interaction, at temperatures close to the chiral transition on

N_t=8

lattices.

Note:

3 pages LaTex, 3 postscript figures. Parallel talk at Lattice2003(nonzero)

talk: Tsukuba 2003/07/15
fermion: lattice field theory
flavor: 2
gauge field theory: SU(3)
isospin: density
finite temperature
critical phenomena
condensation: chiral
numerical calculations: Monte Carlo

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