Fermionic Quasiparticles in QCD at High Baryon Density

Details Fermionic Quasiparticles in QCD at High Baryon Density Fermionic Quasiparticles in QCD at High Baryon Density

2005-10-04

arxiv.org/abs/hep-ph/0510044v2

Nucl.Phys. A774 (2006) 877-880

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, to appear in the proceedings of Quark Matter 2005, Budapest, Aug 4-9

Scientific paper

10.1016/j.nuclphysa.2006.06.156

We study fermionic quasi-particles in QCD at very high baryon density. In the normal quark matter phase unscreened magnetic gluon exchanges lead to non-Fermi liquid behavior. Non-Fermi liquid effects manifest themselves in low energy Green functions that depend on logarithms and fractional powers of energy. In the superfluid phase there is an energy gap for fermionic excitations. Quark mass effects can cause the energy gap to vanish. Gapless fermions in the color flavor locked phase cause an instability towards a state with a non-zero supercurrent.

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