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Vector meson spectral function in a dynamical AdS/QCD model

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arxiv 2108.08479 v3 pith:LNPPXKCG submitted 2021-08-19 hep-ph

Vector meson spectral function in a dynamical AdS/QCD model

classification hep-ph
keywords functionspectralheavyfieldincreasesinteractionmagneticmedium
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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By using gauge/gravity duality, we calculate the spectral function of the heavy vector mesons with the presence of an intense magnetic field in a hot and dense medium. The results show that, a general conclusion, as the increases of magnetic field, chemical potential and temperature, the height of the peak of the spectral function decreases and the width increases. A nontrivial result is the change from the peak position of spectral function. We explain this non-trivial behavior by the interplay of the interaction between the two heavy quarks and the interaction between the medium with each of the heavy quarks.

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    In a soft-wall holographic model with gluon condensate, the π1 hybrid and Zc tetraquark-like ground states both melt below the deconfinement temperature, with Zc melting slightly earlier and a larger condensate delayi...