Resonance Scattering in Optical Lattices and Molecules: Interband versus Intraband Effects

Journal Article · Fri Apr 16 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.104.153201· OSTI ID:21410713

Xiaoling, Cui; Yupeng, Wang ^[1]; Fei, Zhou ^[2]

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1. Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
2. Department of Physics and Astronomy, The University of British Columbia, Vancouver, British Columbia, V6T1Z1 (Canada)

We study the low-energy two-body scattering in optical lattices with higher-band effects included in an effective potential, using a renormalization group approach. The approach captures the most dominating higher-band effects as well as all multiple scattering processes in the lowest band. For an arbitrary negative free space scattering length (a{sub s}), a resonance of low-energy scattering occurs as the lattice potential depths reach a critical value v{sub c}; these resonances, with continuously tunable positions v{sub c} and widths W, can be mainly driven either by intraband or both intra- and interband effects depending on the magnitude of a{sub s}. We have also studied the scattering amplitudes and the formation of molecules when interband effects are dominating, and discussed an intimate relation between molecules for negative a{sub s} and repulsively bound states pioneered by Winkler et al.[Nature (London) 441, 853 (2006)].

• OSTI ID: 21410713
• Journal Information: Physical Review Letters, Vol. 104, Issue 15; Other Information: DOI: 10.1103/PhysRevLett.104.153201; (c) 2010 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
BOUND STATE
CAPTURE
MESONS
MOLECULES
MULTIPLE SCATTERING
PHOTON BEAMS
RENORMALIZATION
RESONANCE
RESONANCE SCATTERING
SCATTERING AMPLITUDES
SCATTERING LENGTHS
TWO-BODY PROBLEM
AMPLITUDES
BEAMS
BOSONS
DIMENSIONS
ELEMENTARY PARTICLES
HADRONS
INELASTIC SCATTERING
LENGTH
MANY-BODY PROBLEM
SCATTERING