Bethe ansatz solvable multi-chain quantum systems

AA Zvyagin - Journal of Physics A: Mathematical and General, 2001 - iopscience.iop.org
In this article we review recent developments in the one-dimensional Bethe ansatz solvable
multi-chain quantum models. The algebraic version of the Bethe ansatz (the quantum …

[图书][B] Finite size effects in correlated electron models: exact results

AA Zvyagin - 2005 - books.google.com
The book presents exact results for one-dimensional models (including quantum spin
models) of strongly correlated electrons in a comprehensive and concise manner. It …

Open tJ chain with boundary impurities

G Bedürftig, H Frahm - Journal of Physics A: Mathematical and …, 1999 - iopscience.iop.org
We study integrable boundary conditions for the supersymmetric tJ model of correlated
electrons which arise when combining static scattering potentials with dynamical impurities …

Magnetic impurity in the one-dimensional Hubbard model

AA Zvyagin, P Schlottmann - Physical Review B, 1997 - APS
The Hubbard chain with a magnetic impurity of arbitrary spin S is studied using the Bethe
ansatz technique. We consider two kinds of impurities which interact with itinerant electrons …

Doped Heisenberg chains: spin-S generalizations of the supersymmetric tJ model

H Frahm - Nuclear Physics B, 1999 - Elsevier
A family of exactly solvable models describing a spin S Heisenberg chain doped with mobile
spin-(S− 1 2) carriers is constructed from gl (2| 1)-invariant solutions of the Yang-Baxter …

Exact solution for an exchange impurity in a one-dimensional correlated host

AA Zvyagin, P Schlottmann - Journal of Physics: Condensed …, 1997 - iopscience.iop.org
The one-dimensional tJ model at the supersymmetric point, J= 2t, with a magnetic impurity of
arbitrary spin S is studied exactly using the Bethe ansatz technique. The impurity interacts by …

Magnetic impurity in an open correlated electron chain

AA Zvyagin - Physical review letters, 1997 - APS
The exact solution of an integrable model with a magnetic (hybridization) impurity located at
the edge of an open correlated electron chain is presented. It is argued that in the case …

Nested Bethe ansatz for Perk–Schultz model with open boundary conditions

GL Li, RH Yue, BY Hou - Nuclear Physics B, 2000 - Elsevier
By using the algebraic Bethe ansatz, we find the exact solution of Perk–Schultz model with
general open boundary conditions. The Bethe ansatz equation and the eigenvalue of the …

Kondo impurity band in a one-dimensional correlated electron lattice

P Schlottmann, AA Zvyagin - Physical Review B, 1997 - APS
We consider a system consisting of a one-dimensional lattice gas of electrons with a finite
concentration of magnetic impurities. The host electrons propagate with nearest-neighbor …

Algebraic properties of an integrable tJ model with impurities

A Foerster, J Links, AP Tonel - Nuclear Physics B, 1999 - Elsevier
We investigate the algebraic structure of a recently proposed integrable tJ model with
impurities. Three forms of the Bethe ansatz equations are presented corresponding to the …