Solar energy paper index
Non-Markovian heavy-quark equilibration and equilibrium correlation function in a thermal medium
One-line summary
A solar energy research paper on Non-Markovian heavy-quark equilibration and equilibrium correlation function in a thermal medium.
Engineering notes
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Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
We compute the charm-quark current-current correlation function within the Langevin framework and extract the heavy-quark diffusion coefficient using the Green--Kubo formula. The formalism is further extended to evaluate the correlation function using a generalized Langevin equation that incorporates memory effects via an exponentially decaying memory kernel. We find that while memory effects qualitatively modify the transient structure of the current correlations, the value of the transport coefficient remains unchanged in the non-relativistic limit. In addition, we investigate heavy-quark thermalization in the presence of memory and compare the non-equilibrium solution of a generalized Fokker--Planck equation with the one obtained from the generalized Langevin equation in the non-relativistic limit. We also consider the relativistic version of the correlated noise case and observe that memory effects can give rise to a damped, oscillatory equilibration of the heavy quark in a non-Markovian bath.
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