Dresden 2026 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 19: Poster Session

MM 19.40: Poster

Dienstag, 10. März 2026, 18:00–20:00, P5

Many-body localization for fermions and bosons - similarities and differences — •Krystian Jablonowski — University of Warsaw, Poland

In this talk, I will present a study that employs energy-level statistics as a robust diagnostic of localization phenomena across different quantum statistics. Using energy-level statistics, I analyze how Hubbard-type interactions shape the transition between localized and delocalized regimes in disordered many-body systems. Particular attention is given to how the strength of interactions influences spectral properties and dynamical behavior. A central theme of the talk is the contrast between fermionic and bosonic systems. By examining how particle statistics modify level-spacing distributions and the stability of localized phases, the study highlights both shared mechanisms and fundamental differences in their localization dynamics. Beyond mapping out the transition, I discuss how disorder and interaction-induced correlations jointly determine the structure of the many-body spectrum, offering insight into when and why localization persists or breaks down. Overall, the talk aims to provide a unified yet discriminating perspective on how fermions and bosons experience many-body localization, clarifying the similarities and distinctions that arise from their quantum statistical nature.

Keywords: localization; statistics; disordered system; Hubbard; level statistics