Fate of in-medium heavy quarks via a Lindblad equation

Journal of High Energy Physics

Davide De Boni¹ 

[1] Department of Physics, College of Science, Swansea University;

关键词: Heavy Quark Physics;    Quark-Gluon Plasma;    Thermal Field Theory;   

DOI  :  10.1007/JHEP08(2017)064

来源: DOAJ

【 摘 要 】

Abstract What is the dynamics of heavy quarks and antiquarks in a quark gluon plasma? Can heavy-quark bound states dissociate? Can they (re)combine? These questions are addressed by investigating a Lindblad equation that describes the quantum dynamics of the heavy quarks in a medium. The Lindblad equations for a heavy quark and a heavy quark-antiquark pair are derived from the gauge theory, following a chain of well-defined approximations. In this work the case of an abelian plasma has been considered, but the extension to the non-abelian case is feasible. A one-dimensional simulation of the Lindblad equation is performed to extract information about bound-state dissociation, recombination and quantum decoherence for a heavy quark-antiquark pair. All these phenomena are found to depend strongly on the imaginary part of the inter-quark potential.

【 授权许可】

Unknown