Particle-hole duality, integrability, and Russian doll BCS model

@article{Bork2015ParticleholeDI,
  title={Particle-hole duality, integrability, and Russian doll BCS model},
  author={Leonid Bork and W. V. Pogosov},
  journal={Nuclear Physics},
  year={2015},
  volume={897},
  pages={405-420}
}
  • Leonid Bork, W. V. Pogosov
  • Published 2015
  • Physics, Mathematics
  • Nuclear Physics
  • Abstract We address a generalized Richardson model (Russian doll BCS model), which is characterized by the breaking of time-reversal symmetry. This model is known to be exactly solvable and integrable. We point out that the Russian doll BCS model, on the level of Hamiltonian, is also particle–hole symmetric. This implies that the same state can be expressed both in the particle and hole representations with two different sets of Bethe roots. We then derive exact relations between Bethe roots in… CONTINUE READING

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