Início
Agenda 

 18 de maio de 2016
16h30 F210 

Prof. Rafael Nepomechie

University of Miami


Bethe
ansatz at roots of unity


We consider a quantum spin chain (onedimensional
array of coupled spins) that is integrable and has quantum group
symmetry Uq(sl(2)). The basic problem is to find a complete set
of eigenvalues and eigenvectors of the Hamiltonian. We first
review the case when q is generic. We then consider the case
that q is a root of unity, for which several surprising new
features appear. (Based on recent work with Azat Gainutdinov.)



