9 papers
S-Duality, SL(2,Z) Multiplets and Killing Spinors
P. M. Llatas, J. M. Sanchez de Santos
The S-duality transformations in type IIB string theory can be seen as local U(1) transformations in type IIB supergravity. We use this approach to construct the multiple…
Worldvolume Dynamics of D-branes in a D-brane Background
J. M. Camino, A. V. Ramallo, J. M. Sanchez de Santos
We study the embedding of D(8-p)-branes in the background geometry of parallel Dp-branes for . The D(8-p)-brane is extended along the directions orthogonal to the Dp-branes…
Graded Parafermions
J. M. Camino, A. V. Ramallo, J. M. Sanchez de Santos
A graded generalization of the Z_k parafermionic current osp(1|2)/U(1) coset conformal field theory. The structure of the parafermionic highest-weight modules is analyzed and the d…
Duality in osp(1|2) Conformal Field Theory and link invariants
I. P. Ennes, P. Ramadevi, A. V. Ramallo +1
We study the crossing symmetry of the conformal blocks of the conformal field theory based on the affine Lie superalgebra osp(1|2). Within the framework of a free field realization…
osp(1|2) Conformal Field Theory
I. P. Ennes, A. V. Ramallo, J. M. Sanchez de Santos
We review some results recently obtained for the conformal field theories based on the affine Lie superalgebra osp(1|2). In particular, we study the representation theory of the os…
Structure constants for the osp(1|2) current algebra
I. P. Ennes, A. V. Ramallo, J. M. Sanchez de Santos
We study the free field realization of the two-dimensional osp(1|2) current algebra. We consider the case in which the level of the affine osp(1|2) symmetry is a positive integer.…