Entropy production from quasinormal modes

Understand

Horizons of black branes have an associated entropy current with non-negative divergence.

• We compute this divergence in a late-time transseries expansion for an inhomogeneous system evolving towards a maximally symmetric asymptotically anti-de Sitter black brane.
• The horizon area equilibrates on half the time-scale set by the dominant quasinormal mode and we find a simple analytic expression for this evolution purely in terms of the background and the quasinormal mode frequencies.
• This computation does not require a gradient expansion and is thus non-perturbative in momenta.