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Strongly Coupled Heavy and Light Quark Thermal Motion from AdS/CFT

by A. K. Mes, R. W. Moerman, J. P. Shock, W. A. Horowitz

Submission summary

As Contributors: William Horowitz · Alexes Mes · Robert Moerman · Jonathan Shock
Arxiv Link: (pdf)
Code repository:
Date submitted: 2020-09-23 14:25
Submitted by: Mes, Alexes
Submitted to: SciPost Physics
Academic field: Physics
  • High-Energy Physics - Theory
  • High-Energy Physics - Phenomenology
Approach: Phenomenological


We give a pedagogical presentation of heavy and light probe quarks in a thermal plasma using the AdS/CFT correspondence. Three cases are considered: external heavy and light quarks undergoing Brownian motion in the plasma, and an external heavy quark moving through the plasma with a constant velocity. For the first two cases we compute the mean-squared transverse displacement of the string's boundary endpoint. At early times the behaviour is ballistic, while the late time dynamics are diffusive. We extract the diffusion coefficient for both heavy and light quarks in an arbitrary number of dimensions and comment on the relevance for relativistic heavy ion phenomenology.

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Submission 2008.09196v2 on 23 September 2020

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