Zobrazeno 1 - 10
of 342
pro vyhledávání: '"Terras, V."'
Autor:
Niccoli, G., Terras, V.
We consider the open XYZ spin chain with boundary fields. We solve the model by the new Separation of Variables approach introduced in arXiv:1904.00852. In this framework, the transfer matrix eigenstates are obtained as a particular sub-class of the
Externí odkaz:
http://arxiv.org/abs/2402.04112
Autor:
Niccoli, G., Terras, V.
Publikováno v:
SciPost Phys. 16, 099 (2024)
This paper is a continuation of [1], in which a set of matrix elements of local operators was computed for the XXZ spin-1/2 open chain with a particular case of unparallel boundary fields. Here, we extend these results to the more general case in whi
Externí odkaz:
http://arxiv.org/abs/2208.10097
Autor:
Niccoli, G., Terras, V.
In this paper we continue our derivation of the correlation functions of open quantum spin 1/2 chains with unparallel magnetic fields on the edges; this time for the more involved case of the XXZ spin 1/2 chains. We develop our study in the framework
Externí odkaz:
http://arxiv.org/abs/2202.12870
Autor:
Pei, H., Terras, V.
We consider the XXZ spin-1/2 Heisenberg chain with antiperiodic boundary conditions. The inhomogeneous version of this model can be solved by Separation of Variables (SoV), and the eigenstates can be constructed in terms of Q-functions, solution of a
Externí odkaz:
http://arxiv.org/abs/2011.06109
Publikováno v:
SciPost Phys. 10, 006 (2021)
We explain how to compute correlation functions at zero temperature within the framework of the quantum version of the Separation of Variables (SoV) in the case of a simple model: the XXX Heisenberg chain of spin 1/2 with twisted (quasi-periodic) bou
Externí odkaz:
http://arxiv.org/abs/2005.01334
In our previous paper [1] we have obtained, for the XXX spin-1/2 Heisenberg open chain, new determinant representations for the scalar products of separate states in the quantum separation of variables (SoV) framework. In this article we perform a si
Externí odkaz:
http://arxiv.org/abs/1807.05197
Publikováno v:
J. Phys. A: Math. Theor. 50 (2017) 224001
We consider the XXX open spin-1/2 chain with the most general non-diagonal boundary terms, that we solve by means of the quantum separation of variables (SoV) approach. We compute the scalar products of separate states, a class of states which notabl
Externí odkaz:
http://arxiv.org/abs/1606.06917
Autor:
Niccoli, G., Terras, V.
We study the inhomogeneous 8-vertex model (or equivalently the XYZ Heisenberg spin-1/2 chain) with all kinds of integrable quasi-periodic boundary conditions: periodic, $\sigma^x$-twisted, $\sigma^y$-twisted or $\sigma^z$-twisted. We show that in all
Externí odkaz:
http://arxiv.org/abs/1508.03230
We pursue our study of the antiperiodic dynamical 6-vertex model using Sklyanin's separation of variables approach, allowing in the model new possible global shifts of the dynamical parameter. We show in particular that the spectrum and eigenstates o
Externí odkaz:
http://arxiv.org/abs/1507.03404
On determinant representations of scalar products and form factors in the SoV approach: the XXX case
Publikováno v:
J. Phys. A, Vol. 49 (Special Issue) 104002 (2016)
In the present article we study the form factors of quantum integrable lattice models solvable by the separation of variables (SoV) method. It was recently shown that these models admit universal determinant representations for the scalar products of
Externí odkaz:
http://arxiv.org/abs/1506.02630