ON THE ALGEBRAIC STRUCTURE OF GRAVITATIONAL DESCENDANTS IN CP(N-1) COSET MODELS

Citation
W. Lerche et Np. Warner, ON THE ALGEBRAIC STRUCTURE OF GRAVITATIONAL DESCENDANTS IN CP(N-1) COSET MODELS, Physics letters. Section B, 343(1-4), 1995, pp. 87-93
Citations number
32
Categorie Soggetti
Physics
Journal title
ISSN journal
03702693
Volume
343
Issue
1-4
Year of publication
1995
Pages
87 - 93
Database
ISI
SICI code
0370-2693(1995)343:1-4<87:OTASOG>2.0.ZU;2-E
Abstract
We investigate how specific free-field realizations of twisted N = 2 s upersymmetric coset models give rise to natural extensions of the ''ma tter'' Hilbert spaces in such a manner as to incorporate the various g ravitational excitations. In particular, we show that adopting a parti cular screening prescription is equivalent to imposing the requisite e quivariance condition on cohomology. We find a simple algebraic charac terization of the W-n-gravitational ground ring spectra of these theor ies in terms of affine-SU(n) highest weights.