论文标题
重夸克热化的开放量子系统方法
Open quantum system approach for heavy quark thermalization
论文作者
论文摘要
我们将重型夸克视为热培养基中的开放量子系统，并从整个schrödinger方程中重新定位随机schrödinger方程（SSE），用于重夸克和培养基。我们将SSE应用于静态热介质（作为环境）中重夸克（作为系统）的动态演变。重夸克通过随机散射与培养基相互作用，这些散射在系统和环境的两个波函数之间随机交换动量和相位因子。动量和相位因子的交换导致系统的不同特征状态之间的过渡。这些由SSE的哈密顿量中的外部随机潜力包括在内。重夸克的随机波函数随机外部电势而演变。在大量的随机波函数上集合平均值后，获得了重夸克的平均波函数和相应的动量分布。我们介绍具有不同耦合强度的静态介质中重夸克的热化。
We treat heavy quark as an open quantum system in the hot medium and rederive the Stochastic Schrödinger Equation (SSE) from the full Schrödinger equation for both heavy quarks and the medium. We apply the SSE to the dynamical evolutions of heavy quarks (as a system) in the static hot medium (as an environment). Heavy quarks interact with the medium via random scatterings, which exchange the momentum and phase factor randomly between two wave functions of the system and the environment. The exchange of momentum and phase factor results in the transition between different eigenstates of the system. These are included via an external stochastic potential in the Hamiltonian of SSE. Stochastic wave functions of heavy quarks are evolved with the stochastic external potential. The mean wave functions and the corresponding momentum distributions of heavy quarks are obtained after the ensemble average over a large set of stochastic wave functions. We present the thermalization of heavy quarks in the static medium with different coupling strength.
