strings@ar

XIII Encuentro de la red strings@ar.
Martes 8 de marzo de 2005, IAFE
PROGRAMA


Martes 8 de marzo de 2005
IAFE
Ciudad Universitaria
09h30 - 09h45 Apertura
09h45 - 10h45 Marc Henneaux (Université Libre de Bruxelles)
Cosmological billiards and hidden symmetries of supergravities
10h45 - 11h15 Café
11h15 - 12h15 Carina Boyallian (Universidad Nacional de Córdoba)
Superconformal algebras and its representations (Abstract)
12h15 - 14h30 Almuerzo
14h30 - 15h30 Péter Forgács (Université de Tours)
Black holes, particle-like and spatially compact solutions in Einstein-Yang-Mills-Higgs theories (Abstract)
15h30 - 16h00 Café
16h00 - 17h00 Gustavo Lozano (Universidad de Buenos Aires)
Vortices in the noncommutative torus

Carina Boyallian (Universidad Nacional de Córdoba)
Superconformal algebras and its representations
(Joint work with J. Liberati, V. Kac and A. Rudakov)
We will introduce the notion of (super)conformal algebras as fundamental piece in the structure of chiral algebras and study its representations. More precisely, we will give the classification of irreducible representations of certain families of superconformal algebras in terms of singular vectors.

Péter Forgács (Université de Tours)
Black holes, particle-like and spatially compact solutions in Einstein-Yang-Mills-Higgs theories
I sketch some interesting phenomena encountered in Einstein-Yang-Mills-Higgs theories, such as the existence of "hairy" black-holes, gravitating 't Hooft-Polyakov monopoles and spatially compact solution (static universes). I also discuss the problem of stability of these solutions.