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  3. CM-AMO SEMINAR | Ferromagnetic Domains and Roton Excitations in a Dilute Bose Superfluid
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CM-AMO SEMINAR | Ferromagnetic Domains and Roton Excitations in a Dilute Bose Superfluid

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Tuesday, January 27, 2015
5:00 AM
335 West Hall

We present a new experimental scheme to modify the band structure of an optical lattice. In an admixed band, a novel quantum phase transition is identified from the observation of domains with ferromagnetic interactions. A careful study of the dynamics within a single domain suggests the appearance of roton excitations, which greatly suppress superfluidity near the quantum critical point.

Speaker:
Physics
Randall Lab and Homer A. Neal Lab
450 Church Street
Ann Arbor, MI 48109-1040
734.764.4437
734.763.9694
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