Mainz 2026 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 43: Poster – Quantum Systems

Q 43.8: Poster

Wednesday, March 4, 2026, 17:00–19:00, Philo 2. OG

Quantum Many-Body Dynamics in a Discrete Phase Space — •Maxence Pandini and Johannes Schachenmayer — CESQ, University of Strasbourg, France

The Discrete Truncated Wigner Approximation (DTWA) is a powerfull tool to simulate many-body dynamics of finite size quantum systems. Coupled to the Truncated Wigner Approximation, this opens the possibility to simulate many-body spin-boson systems with a high number of particles (N~10000) with only a linear numerical complexity. In this work, we show the advances of finding rigorously a DTWA with a Discrete Phase Space formalism of quantum mechanics, doing a direct parallel with the continuous Wigner-Weyl phase space formalism of quantum mechanics.

Keywords: Many-body systems; Quantum phase space