Abstract
We use holography to study the spinodal instability of a four-dimensional, strongly-coupled gauge theory with a first-order thermal phase transition. We place the theory on a cylinder in a set of homogeneous, unstable initial states. The dual gravity configurations are black branes afflicted by a Gregory-Laflamme instability. We numerically evolve Einstein’s equations to follow the instability until the system settles down to a stationary, inhomogeneous black brane. The dual gauge theory states have constant temperature but non-constant energy density. We show that the time evolution of the instability and the final states are accurately described by second-order hydrodynamics. In the static limit, the latter reduces to a single, second-order, non-linear differential equation from which the inhomogeneous final states can be derived.
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Attems, M., Bea, Y., Casalderrey-Solana, J. et al. Phase transitions, inhomogeneous horizons and second-order hydrodynamics. J. High Energ. Phys. 2017, 129 (2017). https://doi.org/10.1007/JHEP06(2017)129
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DOI: https://doi.org/10.1007/JHEP06(2017)129