Mesons versus quasi-normal modes: undercooling and overheating

Details Mesons versus quasi-normal modes: undercooling and overheating Mesons versus quasi-normal modes: undercooling and overheating

2008-03-05

arxiv.org/abs/0803.0759v1

JHEP0805:027,2008

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, 21 figures

Scientific paper

10.1088/1126-6708/2008/05/027

In holographic models of gauge theories with matter, there generically exists a first order phase transition in which mesons dissociate. We perform a careful analysis of the meson and quasi-particle spectra in the overheated resp. undercooled regimes close to the junction of the two phases. We show that all overheated finite meson masses eventually become infinitely degenerate, which implies that any connection to the quasi-particle spectrum is more subtle than previously suggested. For the Sakai-Sugimoto model no smooth connection between these spectra is possible.

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