arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1001.0935nucl-th
收藏

作为开放量子系统的夸克偶素

Quarkonium above deconfinement as an open quantum system

Clint Young, Kevin Dusling

摘要:

在温度高于解除禁闭的情况下,夸克偶素被建模为一个开放量子系统,其动力学不仅由势能和质量决定,还由表征其与介质相互作用的阻力系数决定。本文将重粒子在耗散力作用下的约化密度矩阵表示为虚时间路径上的积分,并进行了数值计算。我们表明,耗散可能会影响欧几里得重重晶格模拟计算温度略高于decenclosure。

英文摘要:

Quarkonium at temperatures above deconfinement is modeled as an open quantum system, whose dynamics is determined not just by a potential energy and mass, but also by a drag coefficient which characterizes its interaction with the medium. The reduced density matrix for a heavy particle experiencing dissipative forces is expressed as an integral over paths in imaginary time and evaluated numerically. We demonstrate that dissipation could affect the Euclidean heavy-heavy correlators calculated in lattice simulations at temperatures just above deconfinement.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑