EFFECTIVE FIELD THEORIES ON THE BRANES AND SPONTANEOUSLY BROKEN SUPERSYMMETRY

por D. Sorokin (University of Padova)

jueves 17 oct. 2002 12:30 → 13:30 Europe/Madrid

Sala Seminarios (Dpto. de Física Teórica (UVEG))

Finding and understanding phenomenologically acceptable mechanisms which cause the SUSY of an underlying (unified) theory to be broken, and in a certain earlier stage to be broken only partially down to a simple SUSY, is one of the challenging problems of theoretical physics. One of the possible mechanisms to break SUSY partially is provided for us by extended objects called branes (supersymmetric particles, strings, membranes etc.). Branes appear in superstring theory as solitons. Their presence in the supersymmetric theory naturally breaks part of space-time SUSY. We discuss this brany mechanism of partial SUSY breaking and describe properties of effective field theories which arise as a result of this phenomenon.