TY - JOUR
T1 - Holstein model and Peierls instability in one-dimensional boson-fermion lattice gases
AU - Pazy, E.
AU - Vardi, A.
PY - 2005/9/1
Y1 - 2005/9/1
N2 - We study an ultracold Bose-Fermi atomic mixture in a one-dimensional optical lattice. When boson atoms are heavier then fermion atoms the system is described by an adiabatic Holstein model, exhibiting a Peierls instability for commensurate fermion filling factors. A bosonic density wave with a wave number of twice the Fermi wave number will appear in the quasi-one-dimensional system, due to the opening of a gap at the Fermi energy in the fermion spectrum.
AB - We study an ultracold Bose-Fermi atomic mixture in a one-dimensional optical lattice. When boson atoms are heavier then fermion atoms the system is described by an adiabatic Holstein model, exhibiting a Peierls instability for commensurate fermion filling factors. A bosonic density wave with a wave number of twice the Fermi wave number will appear in the quasi-one-dimensional system, due to the opening of a gap at the Fermi energy in the fermion spectrum.
UR - http://www.scopus.com/inward/record.url?scp=28844468440&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.72.033609
DO - 10.1103/PhysRevA.72.033609
M3 - Article
AN - SCOPUS:28844468440
SN - 1050-2947
VL - 72
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 3
M1 - 033609
ER -