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2017

A finite-density transition line for QCD with 695 MeV dynamical fermions

Greensite, Jeff, Höllwieser, Roman

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We apply the relative weights method to SU(3) gauge theory with staggered fermions of mass 695 MeV at a set of temperatures in the range $151 \le T \le 267$ MeV, to obtain an effective Polyakov line action at each temperature.

We then apply a mean-field method to search for phase transitions in the effective theory at finite densities.
The result is a transition line in the plane of temperature and chemical potential, with an endpoint at high temperature, as expected, but also a second endpoint at a lower temperature.
We cannot rule out the possibilities that a transition line reappears at temperatures lower than the range investigated, or that the second endpoint is absent for light quarks.

A finite-density transition line for QCD with 695 MeV dynamical fermions · Around

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