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arXiv · 1401.5355

Recovering the chiral critical end-point via delocalization of quark interactions

S. Benic·D. Horvatic·J. Klaric
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Abstract

We show that for the lower branch of the quark condensate and values higher than approximately $-(250 \, \mathrm{MeV})^3$ the chiral critical end-point in the Nambu--Jona-Lasinio model does not occur in the phase diagram. By using lattice motivated non-local quark interactions, we demonstrate that the critical end-point can be recovered. We study this behavior for a range of condensate values and find that the variation in the position of the critical end-point is more pronounced as the condensate is increased.

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S. Benic, D. Horvatic, J. Klaric. 2014-01-21. Recovering the chiral critical end-point via delocalization of quark interactions. https://doi.org/10.1103/physrevd.89.054025

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