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UID:502@qft.physik.hu-berlin.de
DTSTART;TZID=Europe/Berlin:20150114T150000
DTEND;TZID=Europe/Berlin:20150114T160000
DTSTAMP:20150107T203209Z
URL:https://qft.physik.hu-berlin.de/next-seminars/olof-ohlsson-sax-imperia
 l-college/
SUMMARY:Olof Ohlsson Sax\, Imperial College - Integrability in AdS3/CFT2 an
 d the Conformal Field Theory of the Higgs branch
DESCRIPTION:Integrability in AdS3/CFT2 and the Conformal Field Theory of th
 e Higgs branch\n\nAbstract:\n\nIn the context of the AdS3/CFT2 corresponde
 nce\, we investigate the CFT2 at the\norigin of the Higgs branch. This the
 ory has a planar\, weak-coupling limit\, in which\nanomalous dimensions of
  single-trace composite operators can be calculated. At one\nloop\, the ca
 lculation reduces to finding the spectrum of a spin-chain with\nnearest-ne
 ighbour interactions. This CFT2 spin-chain matches precisely the one that\
 nwas previously found as the weak-coupling limit of the integrable system 
 describing\nthe AdS3 side of the duality. We compute the one-loop dilatati
 on operator in a\nnon-trivial compact subsector and show that it correspon
 ds to an integrable\nspin-chain Hamiltonian. This provides the first direc
 t evidence of integrability on\nthe CFT2 side of the correspondence.
CATEGORIES:Research Seminars
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