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arXiv · 2110.14452

Quantum vacuum excitation of a quasi-normal mode in an analog model of black hole spacetime

Maxime J Jacquet·Luca Giacomelli·Quentin Valnais·Malo Joly·Ferdinand Claude·Elisabeth Giacobino·Quentin Glorieux·Iacopo Carusotto·Alberto Bramati
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Abstract

Vacuum quantum fluctuations near horizons are known to yield correlated emission by the Hawking effect. We use a driven-dissipative quantum fluid of microcavity polaritons as an analog model of a quantum field theory on a black-hole spacetime and numerically calculate correlated emission. We show that, in addition to the Hawking effect at the sonic horizon, quantum fluctuations may result in a sizeable stationary excitation of a quasi-normal mode of the field theory. Observable signatures of the excitation of the quasi-normal mode are found in the spatial density fluctuations as well as in the spectrum of Hawking emission. This suggests an intrinsic fluctuation-driven mechanism leading to the quantum excitation of quasi-normal modes on black hole spacetimes.

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Maxime J Jacquet, Luca Giacomelli, Quentin Valnais, Malo Joly, Ferdinand Claude, Elisabeth Giacobino, Quentin Glorieux, Iacopo Carusotto, Alberto Bramati. 2021-10-27. Quantum vacuum excitation of a quasi-normal mode in an analog model of black hole spacetime. https://doi.org/10.1103/physrevlett.130.111501

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