Matrix product states for anyonic systems and efficient simulation of dynamics

ORAL

Abstract

Anyons are exotic quasiparticles that exhibit non-trivial exchange statistics and arise as low lying excitations of topological phases of matter. Many-body systems of anyons offer a realm of new physics to explore that depends on their topological properties. The formalism of Matrix Product States [1] (MPS) has led to significant advances in the study of quantum many-body systems with local degrees of freedom such as spins or bosons. The MPS also forms the basis of the highly successful ``time-evolving block decimation'' [2] (TEBD) algorithm, which can be used to efficiently simulate dynamics of 1D systems. I will describe how to extend the MPS formalism and the TEBD algorithm to study lattice systems of anyons, which carry non-local degrees of freedom. I will also present supporting simulation results for chains of interacting anyons, including results for an anyonic Hubbard-type model [3] that give insight into the transport properties of anyons. \\[4pt] [1] S. Ostlund {\&} S. Rommer, PRL 75, 3537 (1995)\\[0pt] [2] G. Vidal, PRL 91, 147902 (2003)\\[0pt] [3] L. Lehman, V. Zatloukal, et al. PRL 106, 230404 (2011)

Authors

  • Sukhbinder Singh

    Macquarie University

  • Robert Pfeifer

    Perimeter Institute for Theoretical Physics

  • Guifre Vidal

    Perimeter Institute for Theoretical Physics

  • Gavin Brennen

    Macquarie University