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Exactly conserved quasilocal operators for the XXZ spin chain
(Institute of Physics - IOPBristol, 2014-09)
We extend T Prosen’s construction of quasilocal conserved quantities for the XXZ model (2011 Phys. Rev. Lett. 106 217206) to the case of periodic boundary conditions. These quasilocal operators stem from a two-parameter ...
The Bullough-Dodd model coupled to matter fields
(ELSEVIER SCIENCE BV, 2008)
The Bullough-Dodd model is an important two-dimensional integrable field theory which finds applications in physics and geometry. We consider a conformally invariant extension of it, and study its integrability properties ...
A method for solving nonlinear differential equations: An application to λϕ4 model
(2015-01-01)
Recently, it has been great interest in the development of methods for solving nonlinear differential equations directly. Here, it is shown an algorithm based on Padé approximants for solving nonlinear partial differential ...
SOME COMMENTS ON QUASI-INTEGRABILITY
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
In this paper we present our preliminary results which suggest that some field theory models are `almost` integrable; i.e. they possess a large number of `almost` conserved quantities. First we demonstrate this, in some ...
Exploring the lambda model of the hybrid superstring
(2016-10-01)
The purpose of this contribution is to initiate the study of integrable deformations for different superstring theory formalisms that manifest the property of (classical) integrability. In this paper we choose the hybrid ...
A class of mixed integrable models
(Iop Publishing Ltd, 2009-07-10)
The algebraic structure of the integrable mixed mKdV/sinh-Gordon model is discussed and extended to the AKNS/Lund-Regge model and to its corresponding supersymmetric versions. The integrability of the models is guaranteed ...
ATTEMPTS TO DEFINE QUASI-INTEGRABILITY
(WORLD SCIENTIFIC PUBL CO PTE LTDSINGAPORE, 2012)
In this paper we discuss some ideas on how to define the concept of quasi-integrability. Our ideas stem from the observation that many field theory models are "almost" integrable; i.e. they possess a large number of "almost" ...