Status | Confirmed |
Seminar Series | SEM-LPTHE |
Subjects | cond-mat.stat-mech |
Date | Friday 2 February 2018 |
Time | 11:00 |
Institute | LPTHE |
Seminar Room | Bibliothèque |
Speaker's Last Name | Ioffe |
Speaker's First Name | Lev |
Speaker's Email Address | |
Speaker's Institution | LPTHE |
Title | Non-ergodicity in many body systems and disordered random graphs; application to the phase diagram of Josephson junction chain |
Abstract | At very high disorder a generic closed quantum systems becomes completely localized. I argue that this (may body) localization is preempted by a wide regime of non-ergodic behavior that displays a number of unusual properties. A good system to study these effects are Josephson junction arrays in a somewhat unusual regime. The toy model of disordered many body systems that capture the physics of many body systems is provided by random regular graphs. I will sketch a simplified analytical theory of the non-ergodic phase in this models, compare the results with the direct numerical simulations and summarize the conclusions relevant for physical many body systems. |
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