Hydrodynamic theory of giant vortices in trapped unitary Fermi gases
2009 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 80, no 2, 023610- p.Article in journal (Refereed) Published
The rotational properties are studied for a unitary superfluid gas of fermions at zero temperature. Using a hydrodynamic approach, the conditions for the formation of a giant vortex are discussed. It is found that in the present approximation, an anharmonic addition to the usual harmonic-oscillator type of trap potential is necessary for the energetic stability of a giant vortex. To determine the conditions quantitatively, a Thomas-Fermi approach is compared with numerical solutions in three dimensions.
Place, publisher, year, edition, pages
APS , 2009. Vol. 80, no 2, 023610- p.
IdentifiersURN: urn:nbn:se:umu:diva-38890DOI: 10.1103/PhysRevA.80.023610OAI: oai:DiVA.org:umu-38890DiVA: diva2:384316