S-duality and axion-dilaton string cosmology

by J. Maharana (Inst. of Physics ,Bhubaneswar, & CERN)

Tuesday 23 Aug 2005, 14:00 → 15:00 Europe/Zurich

TH Auditorium (CERN)

The four-dimensional string effective action is constructed in manifestly S-duality invariant form. In the cosmological context the problem is identified with motion of a particle on the surface of a 2+1 dimensional pseudosphere. The Wheller De Witt equation is solved exactly by appealing to the underlying symmetry group. The existence of hidden symmetries will be briefly discussed.