Flavors in an expanding plasma
arXiv:0709.3910 · doi:10.1103/PhysRevD.77.066010
Abstract
We consider the effect of an expanding plasma on probe matter by determining time-dependent D7 embeddings in the holographic dual of an expanding viscous plasma. We calculate the chiral condensate and meson spectra including contributions of viscosity. The chiral condensate essentially confirms the expectation from the static black hole. For the meson spectra we propose a scheme that is in agreement with the adiabatic approximation. New contributions arise for the vector mesons at the order of the viscosity terms.
15 pages, 7 figures; v2: accepted for publ. in Phys. Rev. D; revised mass definition agrees with adiabatic approximation
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