Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Cremmer, E."'
It is well known that the toroidal dimensional reduction of supergravities gives rise in three dimensions to theories whose bosonic sectors are described purely in terms of scalar degrees of freedom, which parameterise sigma-model coset spaces. For e
Externí odkaz:
http://arxiv.org/abs/hep-th/9909099
Publikováno v:
Nucl.Phys.B535:242-292,1998
We introduce a doubled formalism for the bosonic sector of the maximal supergravities, in which a Hodge dual potential is introduced for each bosonic field (except for the metric). The equations of motion can then be formulated as a twisted self-dual
Externí odkaz:
http://arxiv.org/abs/hep-th/9806106
Publikováno v:
Nucl.Phys.B534:40-82,1998
We study the Euclidean-signature supergravities that arise by compactifying D=11 supergravity or type IIB supergravity on a torus that includes the time direction. We show that the usual T-duality relation between type IIA and type IIB supergravities
Externí odkaz:
http://arxiv.org/abs/hep-th/9803259
Publikováno v:
Nucl.Phys.B523:73-144,1998
We analyse the global (rigid) symmetries that are realised on the bosonic fields of the various supergravity actions obtained from eleven-dimensional supergravity by toroidal compactification followed by the dualisation of some subset of fields. In p
Externí odkaz:
http://arxiv.org/abs/hep-th/9710119
Publikováno v:
Nucl.Phys.B520:132-156,1998
We show that there exist nonlinearly realised duality symmetries that are independent of the standard supergravity global symmetries, and which provide active spectrum-generating symmetries for the fundamental BPS solitons. The additional ingredient,
Externí odkaz:
http://arxiv.org/abs/hep-th/9707207
Publikováno v:
Commun.Math.Phys.183:609-643,1997
In a previous paper, we proposed a construction of $U_q(sl(2))$ quantum group symmetry generators for 2d gravity, where we took the chiral vertex operators of the theory to be the quantum group covariant ones established in earlier works. The basic i
Externí odkaz:
http://arxiv.org/abs/hep-th/9604131
Publikováno v:
Commun.Math.Phys. 178 (1996) 147
A simple connection between the universal $R$ matrix of $U_q(sl(2))$ (for spins $\demi$ and $J$) and the required form of the co-product action of the Hilbert space generators of the quantum group symmetry is put forward. This gives an explicit opera
Externí odkaz:
http://arxiv.org/abs/hep-th/9503198
Publikováno v:
Commun.Math.Phys. 161 (1994) 597-630
The F and B matrices associated with Virasoro null vectors are derived in closed form by making use of the operator-approach suggested by the Liouville theory, where the quantum-group symmetry is explicit. It is found that the entries of the fusing a
Externí odkaz:
http://arxiv.org/abs/hep-th/9302035
Publikováno v:
Physics Letters B; March 1978, Vol. 74 Issue: 1-2 p61-64, 4p
Publikováno v:
Nuclear Physics B; 1998, Vol. 523 Issue: 1 p73-144, 72p