3 papers
quant-ph2026
One-Body Purity, Non-Gaussianity, and Entanglement in Interacting Integrable Models
Rafał Świętek, Maksymilian Kliczkowski, Lev Vidmar +1
When describing entanglement in typical midspectrum eigenstates of many-body lattice Hamiltonians, two paradigms have emerged that capture the behavior observed in integrable and n…
cond-mat.stat-mech2026
Fading ergodicity and quantum dynamics in random matrix ensembles
Rafał Świętek, Maksymilian Kliczkowski, Miroslav Hopjan +1
Recent work has proposed fading ergodicity as a mechanism for many-body ergodicity breaking. Here, we show that two paradigmatic random matrix ensembles -- the Rosenzweig-Porter mo…
cond-mat.str-el2026
Probing frustrated spin systems with impurities
Maksymilian Kliczkowski, Jakub Grabowski, Maciej M. Maśka
We investigate the effective interaction between two localized spin impurities embedded in a frustrated spin-1/2 Heisenberg chain. Treating the impurity spins as clas…