Physics – Condensed Matter – Quantum Gases
Scientific paper
2010-03-23
Phys. Rev. A 83, 023604 (2011)
Physics
Condensed Matter
Quantum Gases
Scientific paper
10.1103/PhysRevA.83.023604
Recent groundbreaking experiments studying the effects of spin polarization on pairing in unitary Fermi gases encountered mutual qualitative and quantitative discrepancies which seem to be a function of the confining geometry. Using novel numerical algorithms we study the solution space for a 3-dimensional fully self-consistent formulation of realistic systems with up to $10^{5}$ atoms. A study of the three types of solutions obtained demonstrates a tendency towards metastability as the confining geometry is elongated. One of these solutions, which is consistent with Rice experiments at high trap aspect ratio, supports a state strikingly similar to the long sought Fulde-Ferrel-Larkin-Ovchinnikov state. Our study helps to resolve the long-standing controversy concerning the discrepancies between the findings from two different experimental groups and highlights the versatility of actual-size numerical calculations for investigating inhomogeneous fermionic superfluids.
Baksmaty Leslie O.
Bolech C. J.
Lu Hong
Pu Han
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