Journal of Experimental and Theoretical Physics Letters

Superfluid phase transition in trapped atomic Fermi gas

M. A. Baranov

Published Oct 1, 2000• 2 citations

Abstract

Superfluid phase transition in an atomic Fermi gas confined to a harmonic trap is studied. The critical transition temperature and the temperature dependence and spatial shape of the order parameter are determined. The spectrum and wave functions of single-particle and collective excitations are obtained for a gas in the superfluid phase. The excitation eigenfrequencies exhibit a pronounced temperature dependence, allowing, e.g., identification of the superfluid phase.

DOI: 10.1134/1.1331152

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Journal of Experimental and Theoretical Physics Letters

Superfluid phase transition in trapped atomic Fermi gas

M. A. Baranov

Published Oct 1, 2000• 2 citations

Publisher

Abstract

DOI: 10.1134/1.1331152

Related papers

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{T}_{c}

and with the spatial and temperature dependence of the order parameter in the vicinity of the phase transition point.

We examine the effect of the trapping potential on the critical temperature

{T}_{C}

for the BCS transition to a superfluid state in trapped atomic gases of fermions.

{T}_{C}

for an arbitrary power-law trap is calculated in the Thomas-Fermi approximation. For anharmonic traps,

{T}_{C}

can be increased by several orders of magnitude in comparison to a harmonic trap. Our theoretical results indicate that, in practice, one could manipulate the critical temperature for the BCS phase transition by shaping the traps confining the atomic Fermi gases.