Supersymmetric Hubbard Operators

Details Supersymmetric Hubbard Operators Supersymmetric Hubbard Operators

2000-07-30

arxiv.org/abs/cond-mat/0007495v2

Phys. Rev. B 63, 140411R (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages, 1 figure. Substantially Revised Version

Scientific paper

10.1103/PhysRevB.63.140411

We develop a supersymmetric representation of the Hubbard operator which unifies the slave boson and slave fermion representations into a single $U (1)\times SU (1| 1)$ gauge theory, a group with larger symmetry than the product of two $U (1)$ gauge groups. These representations of the Hubbard operator can be used to incorporate strong Hund's interactions in multi-electron atoms as a constraint. We show how this method can be combined with the $SP (N)$ group to yield a locally supersymmetric large-N formulation of the $t-J$ model.

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