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Nucleation of spontaneous vortices in trapped Fermi gases undergoing a BCS-BEC crossover

We study the spontaneous formation of vortices during the superfluid condensation in a trapped fermionic gas subjected to a rapid thermal quench via evaporative cooling. Our work is based on the numerical solution of the time-dependent crossover Ginzburg-Landau equation coupled to the heat diffusion...

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Published in:	Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2011-11, Vol.84 (18), Article 180501
Main Authors:	Glatz, A., Roberts, H. L. L., Aranson, I. S., Levin, K.
Format:	Article
Language:	English
Subjects:	CONDENSATES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY DIFFUSION EQUATIONS EVAPORATIVE COOLING GASES NUCLEATION NUMERICAL SOLUTION OSCILLATIONS VORTICES
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container_title	Physical review. B, Condensed matter and materials physics
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creator	Glatz, A. Roberts, H. L. L. Aranson, I. S. Levin, K.
description	We study the spontaneous formation of vortices during the superfluid condensation in a trapped fermionic gas subjected to a rapid thermal quench via evaporative cooling. Our work is based on the numerical solution of the time-dependent crossover Ginzburg-Landau equation coupled to the heat diffusion equation. We quantify the evolution of condensate density and vortex length as a function of a crossover phase parameter from BCS to BEC. The more interesting phenomena occur somewhat nearer to the BEC regime and should be experimentally observable; during the propagation of the cold front, the increase in condensate density leads to the formation of supercurrents toward the center of the condensate as well as possible condensate volume oscillations.
doi_str_mv	10.1103/PhysRevB.84.180501
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source	American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects	CONDENSATES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY DIFFUSION EQUATIONS EVAPORATIVE COOLING GASES NUCLEATION NUMERICAL SOLUTION OSCILLATIONS VORTICES
title	Nucleation of spontaneous vortices in trapped Fermi gases undergoing a BCS-BEC crossover
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