Quarks and baryons in QCD at finite density

Details Quarks and baryons in QCD at finite density Quarks and baryons in QCD at finite density

2009-08-22

arxiv.org/abs/0908.3276v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 1 figure, 2 tables; to be published in Phys. Lett. B

Scientific paper

The mechanism of string creation for light quarks developed earlier is considered for nonzero quark chemical potential. A strong modification of the confining string due to finite quark density (chemical quark potential $\mu$) is observed. As a surprising result in a multiquark system with a common string junction an attractive well appears of radius $\mu/\sigma$ and of an average depth equal to $\mu$, which induces formation of multiquark hadrons. Preliminary estimates predict a new phase transition to multiquark hadron phase at rather high densities (in heavy ion collisions or in neutron stars) when neutron matter is compressed to 3-4 normal nuclear densities.

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