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SUMMARY:Graphene and Boundary Conformal Field Theory - Chris Herzog (KCL)
DTSTART:20181018T120000Z
DTEND:20181018T130000Z
UID:TALK111856@talks.cam.ac.uk
CONTACT:Dr. Carl Turner
DESCRIPTION:I will discuss boundary contributions to the anomaly in the tr
 ace of the stress tensor  \nin boundary conformal field theory.\nWhile lar
 gely unstudied\, these boundary charges hold out the tantalizing  \npossib
 ility of being as important in the classification of quantum field theory 
 as the  \nbulk central charges “a” and “c”. I will show how these 
 charges can be computed from displacement  \noperator correlation function
 s. I will also demonstrate a boundary conformal field  \ntheory in four di
 mensions — a relative of graphene — with an exactly marginal coupling 
 where these boundary charges  \ndepend on the marginal coupling. The talk 
 is based on arXiv:1707.06224\, arXiv:1709.0743\, and arxiv:1807.01700.
LOCATION:Potter Room (first floor\, Pav. B)
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