Behaviour of the topological susceptibility in two colour QCD across the finite density transition

Details Behaviour of the topological susceptibility in two colour QCD across the finite density transition Behaviour of the topological susceptibility in two colour QCD across the finite density transition

2006-02-16

arxiv.org/abs/hep-lat/0602022v3

Nucl.Phys.B752:124-139,2006

Physics

High Energy Physics

High Energy Physics - Lattice

Latex file, 28 pages, 6 Figures, revised version with further study of Pauli blocking, phase diagram, physical units and the H

Scientific paper

10.1016/j.nuclphysb.2006.06.023

The behaviour of the topological susceptibility \chi in QCD with two colours and 8 flavours of 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 a critical chemical potential \mu_c, 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 critical value \mu_c. At a value \mu_s of the chemical potential, called saturation point, which in our case satisfies \mu_s > \mu_c, Pauli blocking supervenes and consequently the theory becomes quenched.

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