Heisenberg XXX model with general boundaries: eigenvectors from algebraic Bethe ansatz

S Belliard, N Crampé - SIGMA. Symmetry, Integrability and Geometry …, 2013 - emis.de
We propose a generalization of the algebraic Bethe ansatz to obtain the eigenvectors of the
Heisenberg spin chain with general boundaries associated to the eigenvalues and the …

[HTML][HTML] Modified algebraic Bethe ansatz for XXZ chain on the segment–II–general cases

S Belliard, RA Pimenta - Nuclear Physics B, 2015 - Elsevier
The spectral problem of the Heisenberg XXZ spin-1 2 chain on the segment is investigated
within a modified algebraic Bethe ansatz framework. We consider in this work the most …

[HTML][HTML] Modified algebraic Bethe ansatz for XXZ chain on the segment–I: Triangular cases

S Belliard - Nuclear Physics B, 2015 - Elsevier
The modified algebraic Bethe ansatz, introduced by Crampé and the author [8], is used to
characterize the spectral problem of the Heisenberg XXZ spin-1 2 chain on the segment with …

Integrable approach to simple exclusion processes with boundaries. Review and progress

N Crampé, E Ragoucy, M Vanicat - Journal of Statistical …, 2014 - iopscience.iop.org
We study the matrix ansatz in the quantum group framework, applying integrable systems
techniques to statistical physics models. We start by reviewing the two approaches, and then …

[HTML][HTML] Modified algebraic Bethe ansatz for XXZ chain on the segment–III–Proof

J Avan, S Belliard, N Grosjean, RA Pimenta - Nuclear Physics B, 2015 - Elsevier
In this paper, we prove the off-shell equation satisfied by the transfer matrix associated with
the XXZ spin-1 2 chain on the segment with two generic integrable boundaries acting on the …

Open spin chains with generic integrable boundaries: Baxter equation and Bethe ansatz completeness from separation of variables

N Kitanine, JM Maillet, G Niccoli - Journal of Statistical …, 2014 - iopscience.iop.org
We solve the longstanding problem of defining a functional characterization of the spectrum
of the transfer matrix associated with the most general spin-1/2 representations of the six …

Diagonalization of the Heun-Askey-Wilson operator, Leonard pairs and the algebraic Bethe ansatz

P Baseilhac, RA Pimenta - Nuclear Physics B, 2019 - Elsevier
Abstract An operator of Heun-Askey-Wilson type is diagonalized within the framework of the
algebraic Bethe ansatz using the theory of Leonard pairs. For different specializations and …

Algebraic Bethe ansatz for the totally asymmetric simple exclusion process with boundaries

N Crampé - Journal of Physics A: Mathematical and Theoretical, 2015 - iopscience.iop.org
We study the one-dimensional totally asymmetric simple exclusion process in contact with
two reservoirs including also a fugacity at one boundary. The eigenvectors and the …

Algebraic Bethe ansatz for the XXZ Gaudin models with generic boundary

N Crampe - SIGMA. Symmetry, Integrability and Geometry: Methods …, 2017 - emis.de
We solve the XXZ Gaudin model with generic boundary using the modified algebraic Bethe
ansatz. The diagonal and triangular cases have been recovered in this general framework …

Scalar product for the XXZ spin chain with general integrable boundaries

S Belliard, RA Pimenta… - Journal of Physics A …, 2021 - iopscience.iop.org
We calculate the scalar product of Bethe states of the XXZ spin-$\frac {1}{2} $ chain with
general integrable boundary conditions. The off-shell equations satisfied by the transfer …