Polaronic slowing of fermionic impurities in lattice Bose-Fermi mixtures

Physical Review A - Atomic, Molecular, and Optical Physics

Volumn 82, Issue 6, 2010, Pages

  Privitera, A ^a,b   Hofstetter, W ^b  

^a UNIVERSITÀ DI ROMA LA SAPIENZA   (Italy)

^b GOETHE UNIVERSITY   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

BOGOLIUBOV; BOSE-FERMI MIXTURES; DILUTE LIMIT; IMPURITIES IN; OPTICAL LATTICES; POLARON FORMATION; POLARONIC EFFECTS; RENORMALIZATION; SMALL POLARONS; ULTRACOLD GAS;

CRYSTAL LATTICES; IMPURITIES; OPTICAL MATERIALS; POLARONS; RUBIDIUM;

MIXTURES;

EID: 78650986346     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.82.063614     Document Type: Article

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39. The condition γ = 1 / 3, 1 / 2 can be realized by choosing λ ≈ 764 nm, 762 nm, respectively. These values of the lattice wavelength are, however, rather close to the atomic resonances, where a substantial heating effect from photon scattering is expected. This could make the experimental observation more difficult on long time scales.
40. During the completion of this work, we became aware that similar expressions for the matrix elements M in Eq. (22) have been very recently derived independently in M. Bruderer, T. H. Johnson, S. R. Clark, D. Jaksch, A. Posazhennikova, and W. Belzig, e-print arXiv: 1007.3828, for mixtures of fermions and bosons in different optical lattices where tilting of the lattice for fermions was considered.