Twisted Yangian symmetry of the open Hubbard model

Abstract

We show that, in the open Hubbard model with integrable boundary conditions, the bulk Yangian symmetry is broken to a twisted Yangian. We prove that the associated charges commute with the Hamiltonian and the reflection matrix, and that they form a coideal subalgebra.

13 pages. Minor revisions and additional references

References in corpus (2)

• Quantum Deformations of the One-Dimensional Hubbard Model
• Yangian symmetry of the Y=0 maximal giant graviton

Cited by in corpus (1)

• How to fold a spin chain: Integrable boundaries of the Heisenberg XXX and Inozemtsev hyperbolic models