Nucleation of Spontaneous Vortices in Trapped Fermi Gases Undergoing a BCS-BEC Crossover

Autor:	Glatz, A., Roberts, H. L. L., Aranson, I. S., Levin, K.
Rok vydání:	2011
Předmět:	Condensed Matter - Quantum Gases Condensed Matter - Superconductivity
Zdroj:	Phys. Rev. B (Rapid) 84, 180501 (2011)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.84.180501
Popis:	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 towards the center of the condensate as well as possible condensate volume oscillations. Comment: 5 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1102.1792 Zobrazit plný text záznamu View this record from Arxiv