λ\lambda-Deformations of left–right asymmetric CFTs

Oct 17, 2016
19 pages
Published in:
  • Nucl.Phys.B 914 (2017) 623-641
  • Published: Jan, 2017
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Abstract: (Elsevier)
We compute the all-loop anomalous dimensions of current and primary field operators in deformed current algebra theories based on a general semi-simple group, but with different (large) levels for the left and right sectors. These theories, unlike their equal level counterparts, possess a new non-trivial fixed point in the IR. By computing the exact in λ two- and three-point functions for these operators we deduce their OPEs and their equal-time commutators. Using these we argue on the nature of the CFT at the IR fixed point. The associated to the currents Poisson brackets are a two-parameter deformation of the canonical structure of the isotropic PCM.
Note:
  • 1+27 pages, Latex, v2: Correcting a typo in Eqs. (3.1), (3.2), v3: Correcting a typo in Eq.(2.20)
  • field theory: conformal
  • fixed point: infrared
  • asymmetry: left-right
  • n-point function: 3
  • deformation
  • operator product expansion
  • commutation relations
  • anomalous dimension
  • Poisson bracket
  • current algebra