Finite-temperature spectral function of the vector mesons in an AdS/QCD model

Abstract

We use the soft-wall AdS/QCD model to investigate the finite-temperature effects on the spectral function in the vector channel. The dissociation of the vector meson tower onto the AdS black hole leads to the in-medium mass shift and the width broadening in a way similar to the lattice QCD results for the heavy quarkonium at finite temperature. We also show the momentum dependence of the spectral function and find it consistent with screening in a hot wind.

5 pages, 4 figures; references added, typos corrected, some discussions clarified

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