Lattice Approach to Diquark Condensation in Dense Matter

Details Lattice Approach to Diquark Condensation in Dense Matter Lattice Approach to Diquark Condensation in Dense Matter

1998-09-09

arxiv.org/abs/hep-lat/9809040v1

Nucl.Phys.Proc.Suppl. 73 (1999) 480-482

Physics

High Energy Physics

High Energy Physics - Lattice

LATTICE98(hightemp), 3 pages, 2 figures

Scientific paper

10.1016/S0920-5632(99)85111-1

Results are presented of a Monte Carlo simulation of a 2+1 dimensional Gross-Neveu model with SU(2)xSU(2) chiral symmetry at non-zero baryon chemical potential, corresponding to non-zero baryon density. The phenomenon of quark pair condensation is sought via measurement of a two point function. For sufficiently large chemical potential there is a sharp transition between a phase where the chiral symmetry is broken by a standard chiral condensate and one where a scalar diquark condensate, qq, is non-zero. Global U(1) baryon number symmetry may remain unbroken, however, due to the absence of long range order in the phase of qq.

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