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The Dropping of In-Medium Hadron Mass in Holographic QCD

Abstract

We study the baryon density dependence of the vector meson spectrum using the D4/D6 system together with the compact D4 baryon vertex. We find that the vector meson mass decreases almost linearly in density at low density for small quark mass, but saturates to a finite non-zero value for large density. We also compute the density dependence of the $\eta\prime$ mass and the $\eta\prime$ velocity. We find that in medium, our model is consistent with the GMOR relation up to a few times the normal nuclear density. We compare our hQCD predictions with predictions made based on hidden local gauge theory that is constructed to model QCD.Comment: 20 pages, 7 figure

Topics: High Energy Physics - Phenomenology, High Energy Physics - Theory, Nuclear Theory
Year: 2011
DOI identifier: 10.1007/JHEP07(2011)008
OAI identifier: oai:arXiv.org:1104.2362