Exactly solvable model for isospin S=3/2 fermionic atoms on an optical lattice
Abstract
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)× Z2 (half filling) or U(1)× O(5)× Z2 symmetry.
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