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DTSTART;TZID=Europe/Paris:20260224T140000
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DTSTAMP:20260408T113519
CREATED:20260216T103211Z
LAST-MODIFIED:20260217T092721Z
UID:11873-1771941600-1771947000@fermi.univ-tlse3.fr
SUMMARY:Structure de l’intrication multipartite des états quantiques aléatoires et gravité. - (Simon Lin / LPT / Seminar). -24/02/2026\, 14H
DESCRIPTION:Séminaire LPT \nSimon Lin \,NYU Abu Dhabi) \nSeminar LPT\, 24/02/2026\, 14H\, 3R4\, salle de conférence \nAbstract\nEntanglement is the defining feature of a quantum system where different parts of the system cannot be factorized as a product. In terms of bipartite entanglement\, there are clear diagnostics for whether a system is entangled or not. The situation for multipartite entanglement is less understood. In my talk I will discuss different diagnostics of multipartite entanglements that can be formulated as symmetrized contractions of density matrices of the system: Reflected entropy and (genuine) multi-entropy. For random tensor network states\, these signals can be calculated using the replica trick and be reformulated as a combinatorial optimization problem\, allowing explicit evaluation in the large $N$ limit. This in turn leads to interesting connections to minimal cut problems on the graph defining the tensor network. Implications for holography and quantum gravity will also be discussed
URL:https://fermi.univ-tlse3.fr/event/tba-simon-lin-lpt-seminar-24-02-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
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