Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-09-15
Phys.Rev.D70:106010,2004
Physics
High Energy Physics
High Energy Physics - Theory
28pp, 3 figures, RevTeX4
Scientific paper
10.1103/PhysRevD.70.106010
We study string interaction rates in the Brandenberger-Vafa scenario, the very early universe cosmology of a gas of strings. This cosmology starts with the assumption that all spatial dimensions are compact and initially have string scale radii; some dimensions grow due to some thermal or quantum fluctuation which acts as an initial expansion velocity. Based on simple arguments from the low energy equations of motion and string thermodynamics, we demonstrate that the interaction rates of strings are negligible, so the common assumption of thermal equilibrium cannot apply. We also present a new analysis of the cosmological evolution of strings on compact manifolds of large radius. Then we discuss modifications that should be considered to the usual Brandenberger-Vafa scenario. To confirm our simple arguments, we give a numerical calculation of the annihilation rate of winding strings. In calculating the rate, we also show that the quantum mechanics of strings in small spaces is important.
Danos Rebecca
Frey Andrew R.
Mazumdar Anupam
No associations
LandOfFree
Interaction Rates in String Gas Cosmology 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 Interaction Rates in String Gas Cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interaction Rates in String Gas Cosmology will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-621771