A Derivation of the BRST operator for noncritical W strings

Sep, 1992
9 pages
Published in:
  • Phys.Lett.B 296 (1992) 95-103
  • Published: 1992
e-Print:
Report number:
  • UG-8-92,
  • CERN-TH-6647-92,
  • UCB-PTH-92-27,
  • LBL-32806

Citations per year

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Abstract:
We derive the recently proposed BRST charge for non-critical W strings from a Lagragian approach. The basic observation is that, despite appearances, the combination of two classical ``matter'' and ``Toda'' w_3 systems leads to a closed modified gauge algebra, which is of the so-called soft type. Based on these observations, a novel way to construct critical W_3 strings is given.
Note:
  • Dedicated to F. Cerulus on occasion of his 65th birthday
  • string model
  • algebra: W(3)
  • operator product expansion
  • quantization
  • operator: Becchi-Rouet-Stora
  • Lagrangian formalism