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arXiv · 1608.06450

Kondo cloud of single heavy quark in cold and dense matter

Shigehiro Yasui
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Abstract

The Kondo effect is a universal phenomena observed in a variety of fermion systems containing a heavy impurity particle whose interaction is governed by the non-Abelian interaction. At extremely high density, I study the Kondo effect by color exchange in quark matter containing a single heavy (charm or bottom) quark as an impurity particle. To obtain the ground state with the Kondo effect, I introduce the condensate mixing the light quark and the heavy quark (Kondo cloud) in the mean-field approximation. I estimate the energy gain by formation of the Kondo cloud, and present that the Kondo cloud exhibits the resonant structure. I also evaluate the scattering cross section for the light quark and the heavy quark, and discuss its effect to the finite size quark matter.

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Shigehiro Yasui. 2016-08-23. Kondo cloud of single heavy quark in cold and dense matter. https://doi.org/10.1016/j.physletb.2017.08.066

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