INVESTIGADORES
LUGO Adrian Rene
artículos
Título:
Non-standard parametrizations and adjoint invariants of classical groups
Autor/es:
ADRIAN R. LUGO
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 1999 vol. 465 p. 169 - 176
ISSN:
0370-2693
Resumen:
We obtain local parametrizations of classical non-compact Lie groups
where adjoint invariants under maximal compact subgroups are manifest.
Extension to non-compact subgroups is straightforward. As a by-product
parametrizations of the same type are obtained for compact groups. They
are of physical interest in any theory gauge invariant under the adjoint
action, typical examples being the two dimensional gauged
Wess-Zumino-Witten-Novikov models where these coordinatizations become
of extreme usefulness to get the background fields representing the
vacuum expectation values of the massless modes of the associated
(super) string theory.