Ringing in de Sitter spacetime

Alex Buchel

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arXiv · 1707.01030

Ringing in de Sitter spacetime

Alex Buchel

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Abstract

Hydrodynamics is a universal effective theory describing relaxation of quantum field theories towards equilibrium. Massive QFTs in de Sitter spacetime are never at equilibrium. We use holographic gauge theory/gravity correspondence to describe relaxation of a QFT to its Bunch-Davies vacuum - an attractor of its late-time dynamics. Specifically, we compute the analogue of the quasinormal modes describing the relaxation of a holographic toy model QFT in de Sitter.

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Alex Buchel. 2017-07-04. Ringing in de Sitter spacetime. https://arxiv.org/abs/1707.01030

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