重夸克输运的非平衡方法
Nonequilibrium approach to heavy-quark transport
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中文总结 AI 辅助
研究重夸克输运问题，采用非平衡格林函数方法，基于卡达诺夫-贝姆方程，计算相关自能图，在准粒子近似下简化为玻尔兹曼方程，数值研究表明夸克-胶子等离子体效应影响重夸克动力学，尤其在临界温度附近。
中文摘要 AI 辅助
在卡达诺夫-贝姆方程框架内讨论了重夸克输运的非平衡格林函数方法。在实时形式中计算了具有硬热圈重整化传播子的单圈和双圈自能图。在准粒子近似下，动力学方程简化为玻尔兹曼方程，该方程考虑了弹性散射和单次散射中介质诱导的胶子发射。数值研究表明，夸克-胶子等离子体中的离壳和记忆效应影响重夸克动力学，特别是在临界温度附近。
英文摘要
A nonequilibrium Green's function approach to heavy-quark transport is discussed within the framework of the Kadanoff-Baym equation. One- and two-loop self-energy diagrams with hard-thermal-loop resummed propagators are calculated in the real-time formalism. Under the quasiparticle approximation, the kinetic equation reduces to the Boltzmann equation that accounts for elastic scattering and medium-induced gluon emission from a single scattering. Numerical studies suggest that off-shell and memory effects in quark-gluon plasmas influence heavy-quark dynamics, particularly near the critical temperature.
