Écoute de 67 min
Séminaire - Ergodicité et thermalisation des fonctions propres : Mobility Edge of Lévy Matrices
Séminaire - Ergodicité et thermalisation des fonctions propres : Mobility Edge of Lévy Matrices
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Longueur:
60 minutes
Sortie:
24 janv. 2023
Format:
Épisode de podcast
Description
Nalini AnantharamanGéométrie spectraleCollège de FranceAnnée 2022-2023Séminaire - Ergodicité et thermalisation des fonctions propres : Mobility Edge of Lévy MatricesIntervenant(s) : Charles Bordenave, Institut de Mathématiques de MarseilleRésuméI will discuss the problem of unreasonable effectiveness of random matrix theory for description of spectral fluctuations in extended quantum lattice systems. A class oflocally interacting spin systems has been recently identified where the spectral form factor is proven to match with gaussian or circular ensembles of random matrix theory, and where spatiotemporal correlation functions of local observables as well as some measures of dynamical complexity can be calculated analytically. These, so-called dual unitary systems, include integrable, non-ergodic, ergodic, and generically, (maximally) chaotic cases. After reviewing the basic properties of dual unitary Floquet circuits, I will argue that correlation functions of these models are generally perturbatively stable with respect to breaking dual-unitarity, and describe a simple result within this framework.
Sortie:
24 janv. 2023
Format:
Épisode de podcast
Titres dans cette série (37)
Séminaire - Ergodicité et thermalisation des fonctions propres : Eigenstate Thermalization Hypothesis – From Interacting Qubits to Quantum Field Theory de Géométrie spectrale - Nalini Anantharaman