Open AccessSelf-trapping and periodic modulation of Fermi gases in optical lattices
Author(s) -
Xueqiang Gou,
Ming Yan,
Ling Wei-Dong,
Zhao Hongwei,
WenShan Duan
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.130308
Subject(s) - unitarity , physics , trapping , condensed matter physics , fermi gamma ray space telescope , oscillation (cell signaling) , coupling constant , optical lattice , scattering , fermi gas , modulation (music) , lattice (music) , quantum mechanics , superfluidity , ecology , acoustics , biology , electron , genetics
The change of phase space and periodic modulation of Fermi gas from the BCS to unitarity is investigated in one-dimensional optical lattice. Through controlling the scattering length and coupling constant in unitarity, we find the critical values (from the Josephson oscillation to the oscillating-phase-type self-trapping and from the latter to the self-trapping), at the same time, we also find the relationship between the critical coupling constants and the scattering length.