Physics (Internal)

Efficient Langevin simulation of coupled classical fields and fermions

This event is part of the Condensed Matter Theory Seminar Series.

Abstract: We introduce an efficient Langevin method to study bilinear fermionic Hamiltonians interacting with classical fields. We estimate Langevin forces using the Kernel Polynomial Method. Our approach is orders of magnitude faster than previous ones when applied to very large systems with high accuracy requirements. With an optimized GPU implementation, we study complex spin textures in the Kondo lattice model. We observe, for the first time, mesoscale chiral domain coarsening and Z2 vortex dynamics.