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DTSTART;TZID=Europe/Paris:20260127T140000
DTEND;TZID=Europe/Paris:20260127T150000
DTSTAMP:20260408T113517
CREATED:20260126T094217Z
LAST-MODIFIED:20260126T095057Z
UID:11794-1769522400-1769526000@fermi.univ-tlse3.fr
SUMMARY:Cicatrices quantiques à N corps en présence de sauts dépendant de la différence de densité. - (William Faugno / LPT / Seminar). - 27/01/2026\, 14H
DESCRIPTION:Séminaire LPT \nWilliam Faugno (LKB) \nSeminar LPT\, 27/01/2026\, 14H\, 3R4\, salle de conférence \nAbstract\nIt has been observed that isolated quantum systems often still produce measured values consistent with thermalization. This is unexpected due to the lack of a notion of chaos or ergodicity and the unitary dynamics of the quantum theory which is at its core linear. The conditions under which we can expect isolated quantum systems to thermalize were laid out in the eigenstate thermalization hypothesis (ETH)\, which has generally been found to hold in a variety of systems. Still\, notable violations of the ETH have been identified where a seemingly chaotic many-body quantum system exhibits some nonthermal behavior. In this talk\, I will introduce the concept of quantum many-body scars (QMBS)\, a phenomenon in which a small subset of eigenstates violates the ETH and promote nonthermal dynamics. I will then present theoretical results on a bosonic Hamiltonian with a density-dependent hopping and describe two distinct mechanisms for scar formation that arise in this model. These mechanisms provide insight into the conditions under which QMBS can be expected to occur.
URL:https://fermi.univ-tlse3.fr/event/tba-william-faugno-lpt-seminar-27-01-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
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