Non-perturbative methodologies for low-dimensional strongly-correlated systems: From non-abelian bosonization to truncated spectrum methods

AJA James, RM Konik, P Lecheminant… - Reports on Progress …, 2018 - iopscience.iop.org
We review two important non-perturbative approaches for extracting the physics of low-
dimensional strongly correlated quantum systems. Firstly, we start by providing a …

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 …

New construction of eigenstates and separation of variables for SU (N) quantum spin chains

N Gromov, F Levkovich-Maslyuk, G Sizov - Journal of High Energy Physics, 2017 - Springer
A bstract We conjecture a new way to construct eigenstates of integrable XXX quantum spin
chains with SU (N) symmetry. The states are built by repeatedly acting on the vacuum with a …

Determinant form of correlators in high rank integrable spin chains via separation of variables

N Gromov, F Levkovich-Maslyuk, P Ryan - Journal of High Energy Physics, 2021 - Springer
A bstract In this paper we take further steps towards developing the separation of variables
program for integrable spin chains with\(\mathfrak {gl}(N)\) symmetry. By finding, for the first …

Why scalar products in the algebraic Bethe ansatz have determinant representation

S Belliard, NA Slavnov - Journal of High Energy Physics, 2019 - Springer
A bstract We show that the scalar products of on-shell and off-shell Bethe vectors in the
algebralic Bethe ansatz solvable models satisfy a system of linear equations. We find …

Bethe vectors of GL (3)-invariant integrable models

S Belliard, S Pakuliak, E Ragoucy… - Journal of Statistical …, 2013 - iopscience.iop.org
Abstract We study GL (3)-invariant integrable models solvable by the nested algebraic Bethe
ansatz. Different formulas are given for the Bethe vectors and the actions of the generators of …

Introduction to the nested algebraic Bethe ansatz

NA Slavnov - SciPost Physics Lecture Notes, 2020 - scipost.org
We give a detailed description of the nested algebraic Bethe ansatz. We consider integrable
models with a $\mathfrak {gl} _3 $-invariant $ R $-matrix as the basic example, however, we …

Integrable systems, separation of variables and the Yang-Baxter equation

P Ryan - arXiv preprint arXiv:2201.12057, 2022 - arxiv.org
This article, based on the author's PhD thesis, reviews recent advancements in the field of
quantum integrability, in particular the separation of variables (SoV) program for high-rank …

Form factors in SU (3)-invariant integrable models

S Belliard, S Pakuliak, E Ragoucy… - Journal of Statistical …, 2013 - iopscience.iop.org
Abstract We study SU (3)-invariant integrable models solvable by a nested algebraic Bethe
ansatz. We obtain determinant representations for form factors of diagonal entries of the …

On scalar products in higher rank quantum separation of variables

JM Maillet, G Niccoli, L Vignoli - SciPost Physics, 2020 - scipost.org
Using the framework of the quantum separation of variables (SoV) for higher rank quantum
integrable lattice models [1], we introduce some foundations to go beyond the obtained …