The behaviour of the topological susceptibility chi in QCD with two colours and 8 flavours of staggered quarks is studied at nonzero temperature on the lattice across the finite density transition. It is shown that the signal of chi drops abruptly at the (pseudo–)critical chemical potential mc, much as it happens at the finite temperature and zero density transition. The Polyakov loop and the chiral condensate undergo their transitions at the same potential mc. At a value ms of the chemical potential, which satisfies ms >mc, Pauli blocking supervenes and the theory becomes quenched.

Topology, chiral and Polyakov loop transitions at finite density in two-colour QCD

D'ELIA, MASSIMO;
2006-01-01

Abstract

The behaviour of the topological susceptibility chi in QCD with two colours and 8 flavours of staggered quarks is studied at nonzero temperature on the lattice across the finite density transition. It is shown that the signal of chi drops abruptly at the (pseudo–)critical chemical potential mc, much as it happens at the finite temperature and zero density transition. The Polyakov loop and the chiral condensate undergo their transitions at the same potential mc. At a value ms of the chemical potential, which satisfies ms >mc, Pauli blocking supervenes and the theory becomes quenched.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/102834
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