BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:The hierarchy problem\, UV/IR mixing\, nonrenormalisation theorems
  and new approaches to naturalness - Steven Abel (Durham U.\, IPPP)
DTSTART:20250124T160000Z
DTEND:20250124T170000Z
UID:TALK227110@talks.cam.ac.uk
CONTACT:Terry Generet
DESCRIPTION:In this talk I review the hierarchy problem\, and I will descr
 ibe recent progress in understanding the additional constraints that UV/IR
  mixing places on a theory that may be giving hints as to how it can be so
 lved. As an example that can be treated rigorously\, I will consider the U
 V/IR mixing associated with modular invariance in closed strings\, and sho
 w that this yields a novel set of supertrace constraints. These constraint
 s are similar to the nonrenormalisation theorems of supersymmetry but they
  are applicable in full generality. I discuss the various phenomenological
  consequences that arise including the lack of any power law running\, and
  the apparent UV fixed-point behaviour. The talk will be pedagogical.
LOCATION:MR19 (Potter Room\, Pavilion B)\, CMS
END:VEVENT
END:VCALENDAR