Abstract
We introduce a method based on chiral susceptibility, which enables one to draw a phase diagram in the chemical-potential–temperature plane for strongly interacting quarks whose interactions are described by any reasonable gap equation, even if the diagrammatic content of the quark-gluon vertex is unknown. We locate a critical end point at , where is the critical temperature for chiral-symmetry restoration at , and find that a domain of phase coexistence opens at the critical end point whose area increases as a confinement length scale grows.
- Received 14 November 2010
DOI:https://doi.org/10.1103/PhysRevLett.106.172301
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