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SUMMARY:Partition function on Hopf surfaces and supersymmetric Casimir ene
 rgy - Benjamin Assel (KCL) 
DTSTART:20150514T120000Z
DTEND:20150514T130000Z
UID:TALK59323@talks.cam.ac.uk
CONTACT:Godazgar
DESCRIPTION:I will discuss the partition function of 4d N=1 theories on Ho
 pf surfaces. These are diffeomorphic to S^1 x S^3 and the partition functi
 on provides a path integral realization of the supersymmetric index. Its l
 arge S^1 limit exhibits a universal behaviour associated to the existence 
 of a non-vanishing vacuum energy. I will argue that this Casimir energy is
  intrinsic (scheme-independent) and can be computed as the vev of the Hami
 ltonian in the free limit of the theory.
LOCATION:Potter Room (first floor\, Pav. B)
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