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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:The Coulomb Gas of Random Supergravities - Marsh\,
  CMD (Cornell University)
DTSTART;TZID=Europe/London:20120628T164500
DTEND;TZID=Europe/London:20120628T170000
UID:TALK38729AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/38729
DESCRIPTION:I will discuss the mass spectrum of four-dimension
 al {
l N}=1 supergravity in which the Khler potent
 ial and superpotential are taken to be random func
 tions of N chiral superfields. For both supersymme
 tric and non-supersymmetric critical points\, the 
 ensemble of Hessian matrices can be efficiently st
 udied through the Coulomb gas formulation of Rando
 m Matrix Theory. At large N\, the supersymmetric A
 dS vacua have a very peculiar spectrum which typic
 ally includes many BF-allowed tachyons\, and I wil
 l briefly discuss the prospects of obtaining metas
 table de Sitter vacua from an uplift of a supersym
 metric AdS vacuum. An exponentially small fraction
  de Sitter critical points with spontaneously brok
 en supersymmetry are metastable vacua\, and I will
  discuss how the Coulomb gas formulation can be us
 ed to find the joint probability distribution of t
 he masses\, the fraction of critical points which 
 are vacua\, and the spectrum of the vacua. I will 
 conclude by b riefly discussing some cosmological 
 consequences of these results. \n\n
LOCATION:Seminar Room 2\, Newton Institute Gatehouse
CONTACT:Mustapha Amrani
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