On the Spectra of widehat sl( N )k widehat sl( N )k widehat sl( N )k widehat sl( N )k and WN Gravities
Abstract
We study the spectra of G/G coset models by computing BRST cohomology of affine Lie algebras with coefficients in tensor product of two modules. One-to-one correspondence between the spectra of {{A11 } {{A11 } {A11 }}} {A11 }} and that of the minimal matter coupled to gravity (including boundary states of the Kac table) is observed. This phenomenon is discussed from the point of Hamiltonian reduction of BRST complexes of AN1 Lie algebras.
- Publication:
-
International Journal of Modern Physics A
- Pub Date:
- 1993
- DOI:
- 10.1142/S0217751X93002034
- Bibcode:
- 1993IJMPA...8.5115S