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Simulating cosmological supercooling with a cold atom system. II. Thermal damping and parametric instability

Lookup NU author(s): Dr Thomas BillamORCiD, Kate Brown, Dr Andrew Groszek, Professor Ian MossORCiD



This is the authors' accepted manuscript of an article that has been published in its final definitive form by American Physical Society, 2021.

For re-use rights please refer to the publisher's terms and conditions.


We perform an analysis of the supercooled state in an analog of an early universe phase transition based on a one-dimensional, two-component Bose gas with time-dependent interactions. We demonstrate that the system behaves in the same way as a thermal, relativistic Bose gas undergoing a first-order phase transition. We propose a way to prepare the state of the system in the metastable phase as an analog to supercooling in the early universe. We show that parametric resonances in the system can be suppressed by thermal damping if the damping rate is similar to some of the higher rates previously used for modeling nonequilibrium experiments. However, the theoretically predicted damping rate for equilibrium systems within our model is too weak to suppress the resonances.

Publication metadata

Author(s): Billam TP, Brown K, Groszek A, Moss IG

Publication type: Article

Publication status: Published

Journal: Physical Review A

Year: 2021

Volume: 104

Issue: 5

Online publication date: 09/11/2021

Acceptance date: 21/10/2021

Date deposited: 10/11/2021

ISSN (print): 1050-2947

ISSN (electronic): 1094-1622

Publisher: American Physical Society


DOI: 10.1103/PhysRevA.104.053309


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