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arXiv · 2507.00746

Probing Quarkonium Diffusion in a Magnetized Quark-Gluon Plasma

Siddhi Swarupa Jena·Arpan Bhattacharjee·David Dudal·Subhash Mahapatra
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Abstract

Motivated by the potential experimental relevance of magnetically affected heavy-quark diffusion, we consider here a five-dimensional nonlinear Einstein-Born-Infeld-dilaton model to not only holographically model the QCD thermodynamics in a magnetic background, but also to probe the charged inner structure of a heavy quarkonium. The dual model's gravitational equations of motion can be solved in analytical form via the potential reconstruction method. Using a variety of tools -- spectral functions, hydrodynamic expansions or hanging strings -- we study the anisotropic diffusion constants and heavy-quark number susceptibility, each time reporting closed form expressions.

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Siddhi Swarupa Jena, Arpan Bhattacharjee, David Dudal, Subhash Mahapatra. 2025-07-01. Probing Quarkonium Diffusion in a Magnetized Quark-Gluon Plasma. https://doi.org/10.1103/15z1-bxlm

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