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SUMMARY:Seeking fixed points - Hugh Osborn (University of Cambridge)
DTSTART:20181212T090000Z
DTEND:20181212T100000Z
UID:TALK115708@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Fixed points are crucial in understanding the RG flow of quant
 um field&nbsp\;theories. The conformal bootstrap has proved a wonderful to
 ol in&nbsp\;determining the properties of CFTs at fixed points but tends t
 o require&nbsp\;guidance in terms of what symmetries to impose and what is
  the spectrum of&nbsp\;relevant operators. Here I review what can be said 
 in general by using the&nbsp\;time honoured epsilon expansion. Although qu
 alitatively this is not&nbsp\;nowadays the most efficient method it provid
 es qualitative information&nbsp\;about possible fixed points. Finding fixe
 d points which cannot be linked to&nbsp\;the epsilon expansion could provi
 de a clue to non Lagrangian theories.
LOCATION:Seminar Room 1\, Newton Institute
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