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TZID:Europe/Paris
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UID:0-1176@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20261007T140000
DTEND;TZID=Europe/Paris:20261007T153000
DTSTAMP:20260921T095955Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/informal-quantum-
 seminar-marcel-cech/
SUMMARY:Informal Quantum Seminar: Marcel Cech - Salle des séminaires du FA
 ST et du LPTMS\, bâtiment Pascal n°530 - 7 Oct 26 14:00
DESCRIPTION:Glassy dynamics in kinetically constrained monitored quantum dy
 namics\nMarcel Cech (Tubingen University)\n&nbsp\;\n\nKinetically constrai
 ned models are built from simple dynamic rules\, whereby the state changes
  of one constituent depend on the state of its neighbors. The dynamics are
  highly correlated in space and time\, which significantly slows down the 
 relaxation. Analyzing this behavior has provided valuable insights into th
 e understanding of the glass transition as a dynamic phenomenon.\n\nIn thi
 s talk\, I will focus on so-called East models\, where a spin to the “Ea
 st” can only flip if its predecessor is in the excited state. I start wi
 th classical\, and in most cases stochastic\, dynamics and discuss the con
 cept of trajectories and their thermodynamically inspired analysis that sh
 apes the notion of dynamical phase transitions in glass formers. Based on 
 our recent works [1\,2]\, I demonstrate how this concept can be extended t
 o quantum many-body dynamics by using monitored circuit models. These mode
 ls are much harder to explore computationally\, given that the Hilbert spa
 ce grows exponentially. I present results from tensor network calculations
  and simulations on the publicly accessible ibm_kingston quantum processor
 \, and argue that these methods are complementary tools for studying the e
 mergence of glassy dynamics in quantum many-body systems.\n\n[1] M. Cech\,
  J. du Buisson\, C. De Fazio\, F. Carollo\, and I. Lesanovsky\, From Class
 ical Stochastic to Monitored Quantum Dynamics: Dynamical Phase Coexistence
  in East Circuit Models\, arXiv:2603.18227 (2026).\n\n[2] M. Cech\, I. Les
 anovsky\, and F. Carollo\, Glassy dynamics with softened kinetic constrain
 ts on a noisy quantum computer\, arXiv:2608.19335 (2026).
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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TZID:Europe/Paris
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DTSTART:20260329T030000
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