A Kantian et al 2007 New J. Phys. 9 407 doi:10.1088/1367-2630/9/11/407
Atomic lattice excitons: from condensates to crystals
A Kantian1,2,4, A J Daley1,2, P Törmä3 and P Zoller1,2
Show affiliationsWe discuss atomic lattice excitons (ALEs), bound particle–hole pairs formed by fermionic atoms in two bands of an optical lattice. Such a system provides a clean set-up, with tunable masses and interactions, to study fundamental properties of excitons including exciton condensation. We also find that for a large effective mass ratio between particles and holes, effective long-range interactions can mediate the formation of an exciton crystal, for which superfluidity is suppressed. Using a combination of mean-field treatments, bosonized theory based on a Born–Oppenheimer approximation, and one-dimensional (1D) numerical computation, we discuss the properties of ALEs under varying conditions, and discuss in particular their preparation and measurement.
- PACS
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71.35.-y Excitons and related phenomena
71.18.+y Fermi surface: calculations and measurements; effective mass, g factor
- Subjects
- Dates
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Issue 11 (November 2007)
Received 2 August 2007
Published 13 November 2007
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Atomic lattice excitons: from condensates to crystals
A Kantian et al 2007 New J. Phys. 9 407
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