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SUMMARY:Jerome Quintin (U. Waterloo\, Perimeter Inst.)
DTSTART:20231004T140000Z
DTEND:20231004T150000Z
DTSTAMP:20260423T052447Z
UID:AnLy/29
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/AnLy/29/">Ap
 plications of the Kontsevich-Segal Bound in Quantum Cosmology</a>\nby Jero
 me Quintin (U. Waterloo\, Perimeter Inst.) as part of AnLy Strings and Fie
 lds online seminars\n\n\nAbstract\nKontsevich and Segal have proposed a co
 nstraint on complex metrics by demanding the path integral of p-form field
 s to converge on a given fixed background. Witten has conjectured that thi
 s constraint could apply to quantum gravity path integrals. The consequenc
 es for quantum cosmology have thus been explored in the last couple of yea
 rs. I will review some of these recent developments\, including classical 
 and quantum (tunnelling) transitions of the universe. Emphasis will be giv
 en on the Hartle-Hawking no-boundary proposal\, where it is found that fla
 tter potentials more easily satisfy the Kontsevich-Segal bound. When takin
 g into account the weighting of the wave function\, which favours nucleati
 on at low values on the inflationary potential\, the effects conspire to s
 uggest that only a minimal amount of inflation could have occurred. This\,
  in turn\, points towards our universe today being relatively small.\n
LOCATION:https://researchseminars.org/talk/AnLy/29/
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