Violation of energy conditions and entropy production in holographic Bjorken flow

Abstract

We demonstrate that a Bjorken expanding strongly coupled $\mathcal{N}=4$ Supersymmetric Yang-Mills plasma can display dynamically-driven violations of the dominant and also the weak energy condition during hydrodynamization. In addition, we find that a period of vanishing entropy production in far-from-equilibrium stages induces later violations of the dominant energy condition in the strongly coupled plasma. Such violations cannot occur in a classical description of hydrodynamization and suggest that the inclusion of quantum effects in transport can lead to new phenomena in these regimes, even for systems without anomalies or spin.

9 pages, 1 figure; v3: to appear in Physical Review D

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• Hydrodynamization times of a holographic fluid far from equilibrium
• Holographic entropy production in a Bjorken expanding hot and dense strongly coupled quantum fluid
• Gravitational collapse in AdS: instabilities, turbulence, and information
• Stairway to equilibrium entropy
• Homogeneous isotropization dynamics and entropy production in a hot and dense strongly interacting fluid