| EPSRC Reference: |
GR/R00920/01 |
| Title: |
Beyond Cooper Pairs: Condensates of Many-Particle Composites In Dilute Fermi Gases |
| Principal Investigator: |
Gunn, Professor JMF |
| Other Investigators: |
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| Department: |
School of Physics and Astronomy |
| Organisation: |
University of Birmingham |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
31 October 2001 |
Ends: |
30 July 2005 |
Value (£): |
154,320
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| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Motivated by experimental progress in producing degenerate Fermi alkali gases, we will investigate the properties of the ground and excited states for attractive gases with S>1/2.In contrast to what might be expected, we have found in preliminary work that the ground state is a condensate of composites each with 2S+1 particles (ie only pairs in the case of S=1/2). In this work we will concentrate on the experimental signatures of this new exotic state of matter, such as the excited states and properties in a magnetic field. There we anticipate a sequence of critical fields, as the composites are broken up as the gas becomes increasingly spin-polarised. Finally we determine the thermal behaviour of the condensate. It should be noted there is no simple mean field theory for this type of ground-state/excited states.In addition we will examine the robustness of the assumption of spin-independent interactions. Firstly as a perturbation, and then the more interesting case where some of phase-shifts are positive and some negative. This 'frustrated' case is likely to contain phenomena.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.bham.ac.uk |