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New Construction of Eigenstates and Separation of Variables for SU(N) Spin Chains
  OKC/Nordita High-Energy Physics Theory seminar

Monday 13 February 2017
from 13:15 to 14:15
at 132:028
Speaker : Fedor Levkovich-Maslyuk (Nordita)
Abstract : We conjecture a new way to construct eigenstates of integrable XXX spin chains with SU(N) symmetry. Such spin chains arise in many settings ranging from condensed matter to N=4 SYM. We show that states can be built by repeatedly acting on the vacuum with a single operator evaluated at the Bethe roots. The proposal serves as a compact alternative to the usual nested algebraic Bethe ansatz. Furthermore, the roots of this operator give the separated variables of the model, explicitly generalizing Sklyanin’s approach to the SU(N) case. We present many tests of the conjecture and prove it in several special cases. Based on arXiv:1610.08032. with N. Gromov and G. Sizov

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