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UID:0-1132@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20260703T140000
DTEND;TZID=Europe/Paris:20260703T153000
DTSTAMP:20260619T121305Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/informal-quantum-
 seminar-hosho-katsura/
SUMMARY:Informal Quantum Seminar: Hosho Katsura - Salle des séminaires du 
 FAST et du LPTMS\, bâtiment Pascal n°530 - 3 Juil 26 14:00
DESCRIPTION:Integrable SYK-like models\nHosho Katsura (Université de Tokyo
 )\n&nbsp\;\n\nIn this talk\, we introduce two disorder-free variants of th
 e Sachdev–Ye–Kitaev (SYK) model\, both built from Majorana fermions wi
 th all-to-all interactions: (i) the clean Majorana SYK model and (ii) its 
 N=1 supersymmetric extension. Unlike the original disordered SYK model\, w
 hich is maximally chaotic\, these models are integrable\, in the sense tha
 t their Hamiltonians commute with a quadratic Hamiltonian.\n\nThis integra
 bility allows us to study the static and dynamical properties of Model (i)
  with 4-body interactions in detail. We find that the out-of-time-order co
 rrelators (OTOCs) exhibit early-time exponential growth\, resembling that 
 of the disordered SYK model. Time permitting\, I will also discuss the eff
 ect of dissipation on this 4-body clean SYK model.\n\n[1] Soshun Ozaki and
  Hosho Katsura\, Phys. Rev. Research 7\, 013092 (2025).\n[2] Kohei Fukai a
 nd Hosho Katsura\, Phys. Rev. B 113\, 115107 (2026).\n[3] Soshun Ozaki\, H
 ironobu Yoshida\, and Hosho Katsura\, arXiv:2606.08079.
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:20260329T030000
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