Target space symmetries in topological theories I.
TOPOLOGIE
SYMETRIE
ESPACE
DIFFEOMORPHISMES
THEORIE DES CHAMPS
Abstract : We study realization of the target space diffeomorphisms in the type C topological string. We found that the charges, which generate transformations of the boundary observables, form an algebra, which differs from that of bulk charges by the contribution of the bubbled disks. We discuss applications to noncommutative field theories.
NEKRASOV
BAULIEU
LOSEV
P/02/20
IHES
03/2002
A4
13 f.
EN
TEXTE
PREPUBLICATION
P_02_20.pdf
2002
Noncommutative Field Theory
THEORIE QUANTIQUE DES CHAMPS
ESPACE-TEMPS
CINEMATIQUE
MODELES DES CORDES VIBRANTES
SOLITONS
INSTANTONS
Abstract : We review the generalization of field theory to space-time with noncommuting coordinates, starting with the basics and covering most of the active directions of research. Such theories are now known to emerge from limits of M theory and string theory, and to describe quantum Hall states. In the last few years they have been studied intensively, and many qualitatively new phenomena have been discovered, both on the classical and quantum level.
To appear in Reviews of Modern Physics.
NEKRASOV
DOUGLAS
P/01/27
IHES
06/2001
A4
31 f.
EN
TEXTE
PREPUBLICATION
P_01_27.pdf
2001