$\mathcal{R}^2$ curvature-squared corrections on Langevin diffusion coefficients

Qi Zhou; Ben-Wei Zhang

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arXiv · 2402.07541

$\mathcal{R}^2$ curvature-squared corrections on Langevin diffusion coefficients

Qi Zhou·Ben-Wei Zhang

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Abstract

The effect of finite coupling corrections to the Langevin diffusion coefficients on a moving heavy quark in the Super Yang-Mills plasma is investigated. These corrections are related to curvature squared corrections in the corresponding gravity sector. We compare the results of both longitudinal and perpendicular Langevin diffusion coefficients with those in $\mathcal{N}$=4 Super Yang-Mills plasma. It is observed that the curvature-squared corrections influence the Langevin diffusion coefficients, and the corrections for both Langevin diffusion coefficients demonstrate the dependence on the velocity of the moving heavy quark and the specifics of the higher derivative correction. In addition, we conduct calculations for the Langevin diffusion coefficients of a moving heavy quark within the Gauss-Bonnet background.

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Qi Zhou, Ben-Wei Zhang. 2024-02-12. $\mathcal{R}^2$ curvature-squared corrections on Langevin diffusion coefficients. https://arxiv.org/abs/2402.07541

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