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BEGIN:VEVENT
UID:0-934@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20240312T110000
DTEND;TZID=Europe/Paris:20240312T120000
DTSTAMP:20240305T123905Z
URL:https://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lpt
 ms-hosho-katsura-tokyo/
SUMMARY:Séminaire du LPTMS : Hosho Katsura (Tokyo University) - Salle des 
 séminaires du FAST et du LPTMS\, bâtiment Pascal n°530 - 12 Mar 24 11:0
 0
DESCRIPTION:Frustration-free systems and beyond\nHosho Katsura (Tokyo Unive
 rsity)\nFrustration-free systems refer to a class of exactly solvable quan
 tum many-body systems for which the ground state is obtained as a simultan
 eous ground state of all local Hamiltonians. They have a variety of applic
 ations in condensed matter physics and quantum information\, with notable 
 examples including the Affleck-Kennedy-Lieb-Tasaki model and Kitaev's tori
 c code. A slightly more general concept called the local divergence condit
 ion\, often discussed in the context of classical stochastic processes\, h
 as recently found use in constructing special eigenstates of non-integrabl
 e models called quantum many-body scar (QMBS) states. In this talk\, I wil
 l provide an overview of these technical concepts and then present our rec
 ent results. In particular\, I will argue that Witten's conjugation\, orig
 inally introduced in supersymmetric quantum mechanics\, is useful for cons
 tructing a family of frustration-free systems based on simple models such 
 as the classical Ising model. If time permits\, I will also discuss how to
  construct QMBS states systematically.\n\n
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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DTSTART:20231029T020000
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