Results 41 to 50 of about 136,344 (208)
The spectrum of quantum-group-invariant transfer matrices
Nuclear Physics B, 2019 Integrable open quantum spin-chain transfer matrices constructed from trigonometric R-matrices associated to affine Lie algebras gˆ, and from certain K-matrices (reflection matrices) depending on a discrete parameter p, were recently considered in arXiv ...
Rafael I. Nepomechie, Ana L. Retore
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Bethe ansatz for the Ruijsenaars model of BC1- type [PDF]
, 2007 We consider one-dimensional elliptic Ruijsenaars model of type BC1. We show that when all coupling constants are integers, it has meromorphic eigenfunctions expressed by a variant of Bethe ansatz.
Chalykh, O
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Spin-12 XYZ model revisit: General solutions via off-diagonal Bethe ansatz
Nuclear Physics B, 2014 The spin-12 XYZ model with both periodic and anti-periodic boundary conditions is studied via the off-diagonal Bethe ansatz method. The exact spectra of the Hamiltonians and the Bethe ansatz equations are derived by constructing the inhomogeneous T–Q ...
Junpeng Cao +4 more
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An exciting Approach to Theoretical Spectroscopy
Advanced Science, Volume 13, Issue 47, 24 August 2026.ABSTRACT Theoretical spectroscopy, and more generally, electronic‐structure theory, are powerful concepts for describing the complex many‐body interactions in materials. They cover methods from ground‐state properties to lattice excitations and light‐matter interaction, including time‐resolved variants.
Martí Raya‐Moreno +29 more
wiley +1 more source
Journal of Physics A: Mathematical and Theoretical, 2016 We give a pedagogical introduction to the Bethe ansatz techniques in integrable QFTs and spin chains. We first discuss and motivate the general framework of asymptotic Bethe ansatz for the spectrum of integrable QFTs in large volume, based on the exact S-matrix. Then we illustrate this method in several concrete theories. The first case we study is the
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Spin‐s$s$ U(1)$U(1)$‐Eigenstate Preparation
Annalen der Physik, Volume 538, Issue 7, July 2026.A Gray code for bounded integer compositions, together with Gray gates (shown below), are used to prepare general U(1)‐eigenstates of a spin‐s chain. ABSTRACT We formulate a deterministic algorithm for preparing a general U(1)$U(1)$‐eigenstate of a spin‐s$s$ chain of length n$n$. These states consist of linear combinations of computational basis states
Nabi Zare Harofteh, Rafael I. Nepomechie
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Kaleidoscope Yang-Baxter equation for Gaudin’s kaleidoscope models
SciPost Physics CoreRecently, researchers have proposed the Asymmetric Bethe Ansatz method, a theoretical tool that extends the scope of Bethe Ansatz-solvable models by "breaking" partial mirror symmetry via the introduction of a fully reflecting boundary.
Wen-Jie Qiu, Xi-Wen Guan, Yi-Cong Yu
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Jordan blocks and the Bethe Ansatz I: The eclectic spin chain as a limit
Nuclear Physics B, 2022 We present a procedure to extract the generalised eigenvectors of a non-diagonalisable matrix by considering a diagonalisable perturbation of it and computing the non-diagonalisable limit of its eigenvectors.
Juan Miguel Nieto García, Leander Wyss
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Quantum computing via the Bethe ansatz [PDF]
Quantum Information Processing, 2011 6 pages.
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Z(_N)-symmetric field theories and the thermodynamic Bethe ansatz [PDF]
, 1996 This thesis is concerned with perturbed conformal field theory, the thermodynamic Bethe ansatz technique and applications to statistical mechanics. In particular, the phase space of two dimensional Z(_N)-symmetric statistical models is examined using ...
Thompson, K.E., Thompson, Kevin Edward
core