Stochastic potential and quantum decoherence of heavy quarkonium in the quark-gluon plasma

被引：102

作者：

Akamatsu, Yukinao ^{[1
]}

Rothkopf, Alexander ^{[2
]}

机构：

[1] Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Univers, Nagoya, Aichi 4648602, Japan

[2] Univ Bielefeld, Fak Phys, D-33615 Bielefeld, Germany

来源：

PHYSICAL REVIEW D | 2012年 / 85卷 / 10期

关键词：

DYNAMICS;

D O I：

10.1103/PhysRevD.85.105011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose an open quantum systems approach to the physics of heavy quarkonia in a thermal medium, based on stochastic quantum evolution. This description emphasizes the importance of collisions with the environment and focuses on the concept of spatial decoherence of the heavy quarkonium wave function. It is shown how to determine the parameters of the dynamical evolution, i.e. the real potential and the noise strength, from a comparison with quantities to be obtained from lattice QCD. Furthermore, the imaginary part of the lattice QCD heavy quark potential is found to be naturally related to the strength of the noise correlations. We discuss the time evolution of Q (Q) over bar analytically in a limiting scenario for the spatial decoherence and provide a qualitative one-dimensional numerical simulation of the real-time dynamics.

引用

页数：10

共 30 条

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