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Št. zadetkov: 3
From quantum chaos to ergodicity breaking in isolated many-body quantum systems
R. Świętek, Lev Vidmar
Doktorska disertacija
Oznake: quantum ergodicity;random matrix theory;spectral statistics;eigenstate thermalization;ergodicity-breaking transitions;anomalus dynamics;fidelity susceptibility;maximal chaos;fermi golden rule;fading ergodicity;scaling theory;critical exponent;
The ETH represents a breakthrough in many-body physics since it links thermalization of physical observables with the applicability of RMT. This framework is widely believed to hold for an overwhelming majority of physical systems, though exceptions, where conventional ETH is violated, include inte ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Eigenstate entanglement entropy in the integrable spin-1/2 XYZ model
R. Świętek, M. Kliczkowski, Lev Vidmar, Marcos Rigol
Izvirni znanstveni članek
Oznake: statistična fizika;statistical physics;
We study the average and the standard deviation of the entanglement entropy of highly excited eigenstates of the integrable interacting spin-$\frac{1}{2} XYZ$ chain away from and at special lines with $U(1)$ symmetry and supersymmetry. We universally find that the average eigenstate entanglement e ...
Leto: 2024 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Normal weak eigenstate thermalization
Patrycja Łydżba, R. Świętek, Marcin Mierzejewski, Marcos Rigol, Lev Vidmar
Izvirni znanstveni članek
Oznake: kvantni kaos;termalizacija;lokalizacija;quantum chaos;thermalization;localization;
Eigenstate thermalization has been numerically shown to occur for few-body observables in a wide range of nonintegrable models. For intensive sums of few-body observables, a weaker version of eigenstate thermalization known as weak eigenstate thermalization has been proved to occur in general. Here, ...
Leto: 2024 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Št. zadetkov: 3
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