Density fluctuations in the presence of spinodal instabilities

Details Density fluctuations in the presence of spinodal instabilities Density fluctuations in the presence of spinodal instabilities

2007-02-26

arxiv.org/abs/hep-ph/0702254v4

Phys.Rev.Lett.99:232301,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures; final version to appear in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.99.232301

Density fluctuations resulting from spinodal decomposition in a non-equilibrium first-order chiral phase transition are explored. We show that such instabilities generate divergent fluctuations of conserved charges along the isothermal spinodal lines appearing in the coexistence region. Thus, divergent density fluctuations could be a signal not only for the critical end point but also for the first order phase transition expected in strongly interacting matter. We also compute the mean-field critical exponent at the spinodal lines. Our analysis is performed in the mean-field approximation to the NJL model formulated at finite temperature and density. However, our main conclusions are expected to be generic and model independent.

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