Mechanical stability of a strongly interacting Fermi gas of atoms

M. E. Gehm; S. L. Hemmer; S. R. Granade; K. M. O'Hara; J. E. Thomas

Mechanical stability of a strongly interacting Fermi gas of atoms

M. E. Gehm, S. L. Hemmer, S. R. Granade, K. M. O'Hara, J. E. Thomas

Physics

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126 Scopus citations

Abstract

A study was performed to show heuristically that the maximum inward force arising from attractive interactions in a two-state gas of atomic fermions is limited by quantum mechanics to a value less than the outward Fermi pressure. This idea was experimentally demonstrated by directly cooling a two-component Fermi gas of ⁶Li atoms to high degeneracy in an optical trap at magnetic fields near a Feshbach resonance. Imaging the cloud both in the trap and after an abrupt release, no evidence of instability was found. By measuring the relevant universal many-body parameter β, stability was quantitatively described.

Original language	English (US)
Article number	011401
Pages (from-to)	011401/1-011401/4
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	68
Issue number	1
State	Published - Jul 2003

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

Cite this

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abstract = "A study was performed to show heuristically that the maximum inward force arising from attractive interactions in a two-state gas of atomic fermions is limited by quantum mechanics to a value less than the outward Fermi pressure. This idea was experimentally demonstrated by directly cooling a two-component Fermi gas of 6Li atoms to high degeneracy in an optical trap at magnetic fields near a Feshbach resonance. Imaging the cloud both in the trap and after an abrupt release, no evidence of instability was found. By measuring the relevant universal many-body parameter β, stability was quantitatively described.",

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T1 - Mechanical stability of a strongly interacting Fermi gas of atoms

AU - Gehm, M. E.

AU - Hemmer, S. L.

AU - Granade, S. R.

AU - O'Hara, K. M.

AU - Thomas, J. E.

PY - 2003/7

Y1 - 2003/7

N2 - A study was performed to show heuristically that the maximum inward force arising from attractive interactions in a two-state gas of atomic fermions is limited by quantum mechanics to a value less than the outward Fermi pressure. This idea was experimentally demonstrated by directly cooling a two-component Fermi gas of 6Li atoms to high degeneracy in an optical trap at magnetic fields near a Feshbach resonance. Imaging the cloud both in the trap and after an abrupt release, no evidence of instability was found. By measuring the relevant universal many-body parameter β, stability was quantitatively described.

AB - A study was performed to show heuristically that the maximum inward force arising from attractive interactions in a two-state gas of atomic fermions is limited by quantum mechanics to a value less than the outward Fermi pressure. This idea was experimentally demonstrated by directly cooling a two-component Fermi gas of 6Li atoms to high degeneracy in an optical trap at magnetic fields near a Feshbach resonance. Imaging the cloud both in the trap and after an abrupt release, no evidence of instability was found. By measuring the relevant universal many-body parameter β, stability was quantitatively described.

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SN - 1050-2947

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JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

IS - 1

M1 - 011401

ER -

Mechanical stability of a strongly interacting Fermi gas of atoms

Abstract

All Science Journal Classification (ASJC) codes

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