19–21 Dec 2022
Dipartimento di Fisica - Università di Bari "Aldo Moro"
Europe/Rome timezone
SM&FT 2022 Frontiers in Computational Physics

Lindblad master equation approach to the topological phase transition in the disordered Su-Schrieffer-Heeger model

20 Dec 2022, 16:05
20m
Dipartimento di Fisica - Università di Bari "Aldo Moro" - aula A ("Giuseppe Nardulli") - 1st floor

Dipartimento di Fisica - Università di Bari "Aldo Moro" - aula A ("Giuseppe Nardulli") - 1st floor

Speaker

Andrea Nava (Istituto Nazionale di Fisica Nucleare)

Description

We use the Lindblad equation method to investigate the onset of a mobility edge and the topological phase transition in the disordered Su-Schrieffer-Heeger chain connected to two external baths in the large bias limit. From the scaling properties of the nonequilibrium stationary current flowing across the system, we recover the localization/delocalization in the disordered chain.
To probe the topological phase transition in the presence of disorder, we use the even-odd differential occupancy as a mean to discriminate topologically trivial from topologically nontrival phases in the out-of-equilibirum system.

Primary authors

Andrea Nava (Istituto Nazionale di Fisica Nucleare) Gabriele Campagnano Pasquale Sodano (INFN) Domenico Giuliano (Istituto Nazionale di Fisica Nucleare)

Presentation materials