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Séminaire Analyse

organisé par l'équipe Analyse

  • Yingtong Hou

    BPHZ renormalisation of invariant measures via multi-indices

    5 mars 2026 - 11:00Salle de conférences IRMA

    In this talk, we provide a method to obtain the renormalised measures in quantum field theory by renormalising the cumulant expansion of the original measures. After reviewing the main ingredients of renormalisation: cumulant expansion, Wick renormalisation, Feynman diagrams, we introduce our approach based on BPHZ renormalisation via multi-indices which are combinatorial objects originating from describing scalar-valued singular SPDEs. To automate the renormalisation procedure, we propose a multi-index counterpart of the Hopf-algebraic program initiated by Connes and Kreimer for the renormalisation of Feynman diagrams. This is a joint work with Yvain Bruned.
  • Jacques-Arthur Weil

    TBA

    12 mars 2026 - 11:00Salle de conférences IRMA

  • Florent Dupont

    TBA

    19 mars 2026 - 11:00Salle de conférences IRMA

  • András Vasy

    TBA

    26 mars 2026 - 11:00Salle de conférences IRMA

  • Palmirotta Gwenda

    TBA

    2 avril 2026 - 11:00Salle de conférences IRMA

    TBA
  • Stéphane Mischler

    TBA

    9 avril 2026 - 11:00Salle de conférences IRMA