BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:The NUTs and Bolts of Squashed Holography - Thomas Hertog (Leuven)
DTSTART:20161014T120000Z
DTEND:20161014T130000Z
UID:TALK67382@talks.cam.ac.uk
CONTACT:Christopher Moore
DESCRIPTION:I discuss recent work with Bobev and Vreys which is motivated 
 by holography\, both with AdS and with de Sitter boundary conditions. In t
 his\, we first evaluate the partition function of the free O(N) vector mod
 el on a two-parameter family of squashed three spheres. We then obtain gen
 eralisations of the AdS Taub-NUT and Taub-Bolt solutions of Einstein gravi
 ty with the same double squashed boundary geometries. Remarkably\, both sy
 stems exhibit a qualitatively similar behaviour over the entire configurat
 ion space of boundary geometries.\n\nRecent formulations of dS/CFT enable 
 one to interpret the partition function as a function of the two squashing
  parameters as the Hartle-Hawking wave function in a minisuperspace model 
 of anisotropic deformations of de Sitter space. I discuss the resulting pr
 obability distribution over histories in this model and argue that for the
  probabilities to be well defined one must restrict to future boundary con
 figurations corresponding to stable deformations of the field theory. I co
 njecture this restriction implies the exit from scalar field driven eterna
 l inflation is reasonably smooth in holographic cosmology.\n
LOCATION:Pavilion B Potter Room (B1.19)
END:VEVENT
END:VCALENDAR