Speaker
Dr
Georgios Kolionis
(American University of the Middle East, College of Engineering)
Description
Using the method of asymptotic splittings we provide a detailed analysis of the early- and late-time asymptotics of a wide range of possible homogeneous string cosmologies. These contain moduli, axion as well as shifted dilaton fields. A complete portrait of all possible asymptotic solutions in regions where some of the fields blow up is given, and the early- and late-time dynamics of spatially flat FRW solutions is explained and compared to those known in standard relativistic cosmology. Our results provide a novel picture concerning the stability of the dilaton-moduli-vacuum and the dilaton-vacuum solutions of string cosmology near cosmological singularities.
Primary authors
Dr
Georgios Kolionis
(American University of the Middle East, College of Engineering)
Prof.
Spiros Cotsakis
(University of the Aegean)
