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arXiv · 2602.06120

Shear mode transport coefficients from multiple polylogarithms

Paolo Arnaudo
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Abstract

We present an analytical study of the transport coefficients associated with the shear sector of gravitational perturbations around asymptotically anti-de Sitter black branes. In the long-wavelength, low-frequency limit, the wave solutions admit a structure that is fully described in terms of multiple polylogarithms in several variables. We focus primarily on computing the transport coefficients for $\mathcal{N}=4$ SYM, by performing a bulk computation in the five-dimensional black hole background up to order $\mathfrak{q}^{10}$, which extends the results previously available in the literature. We then generalise the procedure to $d+1$ dimensions, characterising the mathematical structure of the resulting transport coefficient expressions.

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Paolo Arnaudo. 2026-03-30. Shear mode transport coefficients from multiple polylogarithms. https://arxiv.org/abs/2602.06120

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