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Holographic Bjorken flow at large-D

Research output: Contribution to journalArticle

Jorge Casalderrey-Solana, Christopher P. Herzog, Ben Meiring

Original languageEnglish
Article number181
JournalJournal of High Energy Physics
Volume2019
Issue number1
DOIs
Publication statusPublished - 23 Jan 2019

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Abstract

We use gauge/gravity duality to study the dynamics of strongly coupled gauge theories undergoing boost invariant expansion in an arbitrary number of space-time dimensions (D). By keeping the scale of the late-time energy density fixed, we explore the infinite-D limit and study the first few corrections to this expansion. In agreement with other studies, we find that the large-D dynamics are controlled by hydrodynamics and we use our computation to constrain the leading large-D dependence of a certain combination of transport coefficients up to 6th order in gradients. Going beyond late time physics, we discuss how non-hydrodynamic modes appear in the large-D expansion in the form of a trans-series in D, identical to the non-perturbative contributions to the gradient expansion. We discuss the consequence of this trans-series in the non-convergence of the large-D expansion.

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