Exactly solvable model for isospin S=3/2 fermionic atoms on an optical lattice.
We propose an exact solution of a model describing a low energy behavior of cold isospin S=3/2 fermionic atoms on a one-dimensional optical lattice. Depending on the band filling the effective field theory has a form of a deformed Gross-Neveu model with either O(7)x Z2 (half filling) or U(1) x O(5) x Z2 symmetry.
Controzzi
D
D
International School for Advanced Studies and INFN, via Beirut 4, 34014 Trieste, Italy.
Tsvelik
A M
AM