Abstract:
Integrable inhomogeneous or impurity models are usually constructed by either shifting the spectral parameter in the Lax operator or using another representation of the spin algebra. We propose a more involved general method for such construction in which the Lax operator contains generators of a novel quadratic algebra, a generalization of the known quantum algebra. In forming the monodromy matrix, we can replace any number of the local Lax operators with different realizations of the underlying algebra, which can result in spin chains with nonspin impurities causing changed coupling across the impurity sites, as well as with impurities in the form of bosonic operators. Following the same idea, we can also generate integrable inhomogeneous versions of the generalized lattice sine-Gordon model, nonlinear Schrцdinger equation, Liouville model, relativistic and nonrelativistic Toda chains, etc.
Citation:
A. Kundu, “Construction of a new class of quantum integrable inhomogeneous models”, TMF, 118:3 (1999), 423–433; Theoret. and Math. Phys., 118:3 (1999), 333–340
\Bibitem{Kun99}
\by A.~Kundu
\paper Construction of a new class of quantum integrable inhomogeneous models
\jour TMF
\yr 1999
\vol 118
\issue 3
\pages 423--433
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\crossref{https://doi.org/10.4213/tmf715}
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\transl
\jour Theoret. and Math. Phys.
\yr 1999
\vol 118
\issue 3
\pages 333--340
\crossref{https://doi.org/10.1007/BF02557330}
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Linking options:
https://www.mathnet.ru/eng/tmf715
https://doi.org/10.4213/tmf715
https://www.mathnet.ru/eng/tmf/v118/i3/p423
This publication is cited in the following 3 articles:
Kundu, A, “Unifying quantization for inhomogeneous integrable models”, Physics Letters B, 633:4–5 (2006), 657
Kundu, A, “Generation of new classes of integrable quantum and statistical models”, Physica A-Statistical Mechanics and Its Applications, 318:1–2 (2003), 144
Anjan Kundu, “Construction of Variable Mass Sine-Gordon and Other Novel Inhomogeneous Quantum Integrable Models”, JNMP, 8:Supplement (2001), 178