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SUMMARY:CFT from EFT at large charge - Riccardo Rattazzi
DTSTART:20180530T131500Z
DTEND:20180530T141500Z
UID:TALK102094@talks.cam.ac.uk
CONTACT:David Marsh
DESCRIPTION:Properties of CFT operators carrying some large global charge 
 \ncan be systematically computed in a 1/Q expansion under the plausible as
 sumption that the corresponding states on the cylinder\nare described by a
  superfluid phase. In particular one can compute the spectrum of such “h
 eavy" operators and the heavy-heavy-light\nfusion coefficients. The key to
  computational control is the effective field theory for the superfluid ph
 ase. This is universally described by \na goldstone boson in a systematic 
 derivative expansion\, which in CFT precisely corresponds to the 1/Q expan
 sion.  Furthermore\,\nif the superfluid supports vortex excitations as it 
 normally happens\, one can  derive properties of the operators carrying bo
 th large charge and large spin.\n
LOCATION:MR3\, Centre for Mathematical Sciences
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