2000 character limit reached
A novel analytic spin chain model with fractional revival (1509.08965v1)
Published 29 Sep 2015 in quant-ph
Abstract: New analytic spin chains with fractional revival are introduced. Their nearest-neighbor couplings and local magnetic fields correspond to the recurrence coefficients of para-Racah polynomials which are orthogonal on quadratic bi-lattices. These models generalize the spin chain associated to the dual-Hahn polynomials. Instances where perfect state transfer also occurs are identified.