Nested algebraic Bethe ansatz for orthogonal and symplectic open spin chains

26 Sep 2019 Gerrard Allan Regelskis Vidas

We present a nested algebraic Bethe ansatz for one-dimensional open so(2n)- and sp(2n)-symmetric spin chains with diagonal boundary conditions and described by the extended twisted Yangian. We use a generalization of the Bethe ansatz introduced by De Vega and Karowski which allows us to relate the spectral problem of a so(2n)- or sp(2n)-symmetric open spin chain to that of a gl(n)-symmetric open spin chain... (read more)

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  • MATHEMATICAL PHYSICS
  • HIGH ENERGY PHYSICS - THEORY
  • MATHEMATICAL PHYSICS
  • EXACTLY SOLVABLE AND INTEGRABLE SYSTEMS