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

• URL: http://arxiv.org/abs/2110.14452v3
• Date: Tue, 28 Feb 2023 08:46:57 GMT
• Title: Quantum vacuum excitation of a quasi-normal mode in an analog model of black hole spacetime
• Authors: Maxime J Jacquet, Luca Giacomelli, Quentin Valnais, Malo Joly, Ferdinand Claude, Elisabeth Giacobino, Quentin Glorieux, Iacopo Carusotto and Alberto Bramati
• Abstract summary: We use a driven-dissipative quantum fluid of microcavity polaritons as an analog model of a quantum field theory on a black-hole spacetime. 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.
• Score: 19.767470853445776
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• 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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