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SUMMARY:Grégoire Olivier Mathys (EPFL)
DTSTART:20251209T100000Z
DTEND:20251209T110000Z
DTSTAMP:20260423T024826Z
UID:NKUA-HEP/52
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NKUA-HEP/52/
 ">Averaged null energy and the renormalisation group</a>\nby Grégoire Oli
 vier Mathys (EPFL) as part of NKUA HEP Seminars\n\n\nAbstract\nThe average
 d null energy operator (ANEC) is a light-ray integral of the null energy\,
  which is known to have far-reaching consequences in CFT\, such as the Lor
 entzian Inversion Formula. It is also closely connected to modular Hamilto
 nian in QFT. In this talk\, I will discuss a new connection between the AN
 EC operator and monotonicity of the renormalization group. In particular\,
  I will show how the 2d c-theorem and 4d a-theorem can be derived using th
 e ANEC. This derivation relies on contact terms appearing in specific ANEC
  correlators. I will also review a new infinite set of constraints that ca
 n be derived from the ANEC in 2d QFT. This program hints at a more general
  role for light-ray operators in QFT\, which I will argue for.\n
LOCATION:https://researchseminars.org/talk/NKUA-HEP/52/
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