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SUMMARY:An integrable Lorentz-breaking deformation of 2d CFTs - Monica Gui
 ca (CEA Saclay/Uppsala/Nordita)
DTSTART:20171123T130000Z
DTEND:20171123T140000Z
UID:TALK94588@talks.cam.ac.uk
CONTACT:Dr. Carl Turner
DESCRIPTION:It has been recently shown that the deformation of an arbitrar
 y two-dimensional conformal field theory by the composite irrelevant opera
 tor TT¯\, built from the components of the stress tensor\, is solvable\; 
 in particular\, the finite-size spectrum of the deformed theory can be obt
 ained from that of the original CFT through a universal formula. We study 
 a similarly universal\, Lorentz-breaking deformation of two-dimensional CF
 Ts that posess a conserved U(1) current\, J. The deformation takes the sch
 ematic form JT¯ and is interesting because it preserves an SL(2\,R)×U(1)
  subgroup of the original global conformal symmetries. For the case of a p
 urely (anti)chiral current\, we find the finite-size spectrum of the defor
 med theory and study its thermodynamic properties. We test our predictions
  in a simple example involving deformed free fermions.
LOCATION:Potter Room (first floor\, Pav. B)
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