Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1991-12-03
Class.Quant.Grav.9:979-1000,1992
Physics
High Energy Physics
High Energy Physics - Theory
30 p
Scientific paper
10.1088/0264-9381/9/4/013
We review some formal aspects of cosmological solutions in closed string theory with duality symmetric ``matter'' following recent paper with C. Vafa (HUTP-91/A049). We consider two models : when the matter action is the classical action of the fields corresponding to momentum and winding modes and when the matter action is represented by the quantum vacuum energy of the string compactified on a torus. Assuming that the effective vacuum energy is positive one finds that in both cases the scale factor undergoes oscillations from maximal to minimal values with the amplitude of oscillations decreasing to zero or increasing to infinity depending on whether the effective coupling (dilaton field) decreases or increases with time. The contribution of the winding modes to the classical action prevents infinite expansion. Duality is ``spontaneously broken'' on a solution with generic initial conditions.
No associations
LandOfFree
Dilaton, winding modes and cosmological solutions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dilaton, winding modes and cosmological solutions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dilaton, winding modes and cosmological solutions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-500993