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Sep 7 – 12, 2025
"Diament" Hotel
Europe/Warsaw timezone

Exploring quantum dynamics of interacting fermions in disordered and disorder-free potentials via phase-space methods

Sep 12, 2025, 11:10 AM
20m
Chair: Robin Steinigeweg

Chair: Robin Steinigeweg

Contributed talk Dynamics, Integrability, and Ergodicity of Quantum Systems

Speaker

Adam S. Sajna (Institute of Theoretical Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, 50-370 Wrocław, Poland)

Description

The analysis of quantum dynamics in large interacting systems is a challenging task due to the complexity of the Hilbert space. This challenge is particularly significant when resolving specific energy scales imposed by external potentials. We demonstrate that the fermionic truncated Wigner approximation (fTWA) and its variants can yield unexpectedly accurate results in simulations of one- and two-dimensional fermionic systems. The computational efficiency of this semiclassical method enables the exploration of systems with hundreds of lattice sites, allowing for the investigation of regimes relevant to realistic experiments. Our discussion focuses on both disordered and disorder-free potentials, which have been extensively studied in optical lattice experiments.

Primary author

Adam S. Sajna (Institute of Theoretical Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, 50-370 Wrocław, Poland)

Co-authors

Łukasz Iwanek (Institute of Theoretical Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, 50-370 Wrocław, Poland) Marcin Mierzejewski (Wrocław University of Science and Technology) Anatoli Polkovnikov (Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA) Dries Sels (Department of Physics, New York University, New York, New York 10012, USA)

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