Abstract
A Langevin equation of heavy quarks in high-temperature quark-gluon plasma is derived. The dynamics of heavy quark color is coupled with the phase space dynamics and causes a macroscopic superposition state of heavy quark momentum. Decoherence of the superposition state allows one to use a classical description. The time scale of decoherence gives an appropriate discretization time scale for the classical Langevin equation, where is heavy quark mass and is heavy quark momentum diffusion constant.
- Received 5 May 2015
DOI:https://doi.org/10.1103/PhysRevC.92.044911
©2015 American Physical Society
Physics Subject Headings (PhySH)
Nuclear Physics