| | QI/AMO Seminar: "Normal state of highly polarized Fermi gases: full many-body treatment" | |
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Speaker
| | Professor Roland Combescot
University of Pierre & Marie Curie, Paris, France |
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| | Date | | Nov 12, 2009 |
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| | Time | | 12:00 pm
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| | Location | | 280 Materials Research Lab., 104 S. Goodwin Ave., Urbana |
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| | Sponsor | | Department of Physics |
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| | Contact | | Linda Thorman |
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| | E-Mail | | thorman@illinois.edu |
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| | Phone | | 217-333-1590 |
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| | Event type | | QI/AMO Seminar |
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| | Original Calendar | | Physics - QI/AMO Seminar |
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| | Views | | 17087 |
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| We present an analytical treatment of a single down-atom within a Fermi sea of up-atoms. Our treatment amounts essentially to an exact solution of this problem.This is done both when the attractive interactionis strong enough to produce a bound state, dressed by the Fermi sea, or when it is slightly weaker,leading to a dressed down-atom (a 'polaron'). Whenever our results can be compared toother methods, analytical or numerical (Monte-Carlo), the agreement is excellent.The success of our approach is due to its natural incorporation of a large number of contributions which displaya nearly perfect destructive interference. |
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