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SUMMARY:Keeping matter in the loop in 3d quantum gravity
DTSTART:20230508T140000
DTSTAMP:20260504T081410Z
UID:f21b894c76c7d96bcc136dfb4691a5b67f0cbf69b646502407c84ecb
CATEGORIES:Conferences - Seminars
DESCRIPTION:Jackson R. Fliss ( Cambridge University)\nAbstract: Chern-Sim
 ons theory provides an attractive framework for quantizing 3d gravity with
 out reference to holography. But how do we describe matter in CS gravity w
 hile retaining its useful features? In this talk\, I will introduce a "Wil
 son spool\," which provides an effective description of massive one-loop d
 eterminants directly as a gauge-invariant object. The spool can be heurist
 ically viewed as a collection of Wilson loops winding in the Euclidean spa
 cetime. I will illustrate it's utility for reproducing the one-loop determ
 inants of massive scalar fields in both Anti-de Sitter and de Sitter backg
 rounds. In the context of de Sitter quantum gravity\, exact results in Che
 rn-Simons theory allow one to calculate the spool at finite G_N. This prov
 ides a method for investigating how dynamical gravity renormalizes the phy
 sics of massive matter.
LOCATION:BSP 727 https://plan.epfl.ch/?room==BSP%20727 https://epfl.zoom.u
 s/j/69362612859
STATUS:CONFIRMED
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