# Condensed-Matter Physics & Materials Science Seminar

## "The 2-spinon contribution to the longitudinal structure factor in the XXZ model"

#### Presented by Isaac Perez Castillo, Institute of Physics, UNAM and London Mathematical Laboratory

Thursday, August 22, 2019, 1:30 pm — ISB Bldg. 734 Conf. Rm. 201 (upstairs)

In this work we derive exactly the two-spinon contribution to the longitudinal dynamical structure factor of the anisotropic Heisenberg spin-1/2 chain in the gapped regime by using quantum group approach. We will briefly discuss some of the mathematical difficulties when confronting form factor formulas given by quantum group approach and how to overcome these obstacles. We end up by contrasting our results with those coming from perturbation theory, while comparison to DMRG and experiments are currently underway.

Hosted by: Alexei Tsvelik

15170 | INT/EXT | Events Calendar