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Preprint Sep 2026

Restricted typicality in non-equilibrium quantum many-body systems

Characterizing the time evolution of generic quantum many-body systems is a fundamental challenge, as representing the exact state requires exponentially scaling computational resources. While hydrodynamics and statistical mechanics successfully simplify this task by predicting the expectation values of local observabl...

Konrad Pawlik, P. Sierant, Jakub Zakrzewski · 1 citation
Preprint Sep 2026

Phase space anatomy of dynamical quantum phase transitions

Dynamical quantum phase transitions (DQPT) are commonly defined either by the behavior of a late-time order parameter or by nonanalyticities in a quantum state's return rate. We show that discrete phase space fundamentally separates these two notions by the scale of information they require. An order parameter transiti...

Zakaria Mzaouali · 0 citations
Preprint Sep 2026

Correlation and Branching Mechanisms in the Quantum-to-Classical Transition of Interacting Systems

We analyze the quantum-to-classical transition of interacting systems from the viewpoint of reduced dynamical closure. Bohmian trajectories are used as a diagnostic of the probability flow generated by the full wavefunction, rather than as an alternative set of quantum predictions. A closed classical or semiclassical d...

Bing-Yu Cui · 0 citations
Preprint Sep 2026

Theory of post-selected entanglement transitions in monitored bosons

Entanglement phase transitions driven by quantum measurements have emerged as a central paradigm in open quantum many-body physics. Such phase transitions are well established for systems with finite local Hilbert-space dimensions, such as qubits and fermions, while their realization in bosonic systems with unbounded l...

I. Komissarov, Emanuele G. Dalla Torre, Ahana Chakraborty · 0 citations
Preprint Sep 2026

Large-scale quantum simulations of dissipative spin-1/2 Heisenberg chains

A quantum many-body system coupled to an environment relaxes to a nonequilibrium steady state that can sustain order with no equilibrium counterpart. Computing such steady states is harder than closed-system dynamics as the density matrix problem squares the Hilbert-space dimension, and no free energy selects the stead...

João C. Getelina, Andrew A. Cox, Md. Asaduzzaman et al. · 1 citation
Preprint Sep 2026

Revealing Many-Body Phases at finite temperatures through Quantum Coherence Distribution

We introduce a diagnostic framework based on the full probability distribution of quantum coherence to probe single-particle and many-body phases at finite temperature. We first apply this approach to the localization transition in the non-interacting Aubry-Andr\'e model and then extend the analysis to its interacting...

Antonio Palamara, N. Gullo, A. Sindona et al. · 0 citations

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