Integrable Kondo impurities in the one-dimensional supersymmetric U model of strongly correlated electrons

Abstract

Integrable Kondo impurities in the one-dimensional supersymmetric U model of strongly correlated electrons are studied by means of the boundary graded quantum inverse scattering method. The boundary K matrices depending on the local magnetic moments of the impurities are presented as nontrivial realizations of the reflection equation algebras in an impurity Hilbert space. Furthermore, the model Hamiltonian is diagonalized and the Bethe ansatz equations are derived. It is interesting to note that our model exhibits a free parameter in the bulk Hamiltonian but no free parameter exists on the boundaries. This is in sharp contrast to the impurity models arising from the supersymmetric t-J and extended Hubbard models where there is no free parameter in the bulk but there is a free parameter on each boundary.

5 pages, RevTex

References in corpus (5)

• Exact Results for a Kondo Problem in One Dimensional t-J Model
• Integrable open-boundary conditions for the $q$-deformed supersymmetric $U$ model of strongly correlated electrons
• Integrability of a t-J model with impurities
• Algebraic Bethe ansatz for integrable Kondo impurities in the one-dimensional supersymmetric t-J model
• Integrable Kondo impurities in the one-dimensional supersymmetric extended Hubbard model

Cited by in corpus (5)

• On $A_{n-1}^{(1)},B_n^{(1)},C_n^{(1)},D_n^{(1)},A_{2n}^{(2)},A_{2n-1}^{(2)}$ and $D_{n+1}^{(2)}$ Reflection $K$-Matrices
• Integrable impurities for an open fermion chain
• Exact solution for the Bariev model with boundary fields
• A supersymmetric U_{q}[osp(2|2)]-extended Hubbard model with boundary fields
• Integrable open supersymmetric U model with boundary impurity