CRITICAL NONLINEAR O(N) SIGMA-MODELS AT 2-LESS-THAN-D-LESS-THAN-4 - THE DEGENERACY OF QUASI-PRIMARY FIELDS AND ITS RESOLUTION

Authors
LANG K RUHL W
Citation
K. Lang et W. Ruhl, CRITICAL NONLINEAR O(N) SIGMA-MODELS AT 2-LESS-THAN-D-LESS-THAN-4 - THE DEGENERACY OF QUASI-PRIMARY FIELDS AND ITS RESOLUTION, Zeitschrift fur Physik. C, Particles and fields, 61(3), 1994, pp. 495-509
Citations number
20
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
61
Issue
3
Year of publication
1994
Pages
495 - 509
Database
ISI
SICI code
0170-9739(1994)61:3<495:CNOSA2>2.0.ZU;2-O
Abstract
Quasi-primary fields with dimensions that differ at most by O(1/N) and whose other quantum numbers are all equal, are called degenerate. Mul tiplets of such fields are produced by a chain of fusion processes. Fo rcing the fusion to run through different intermediate states leads to matrices of fusion and anomalous dimension amplitudes whose simultane ous diagonalization allows to resolve the degeneracy.