2000/04/30 by A. Feinstein, K. E. Kunze, K.E. Kunze +2
Physics and Astronomy · #Black Holes and Theoretical Physics #Collision #Cosmology #Cosmology and Gravitation Theories #Dilaton #Entropy (arrow of time) #Inflation (cosmology) #Noncommutative and Quantum Gravity Theories #Nonlinear system #Scaling #astro-ph #gr-qc #hep-th
paper · pdf · doi:10.1016/s0370-2693(00)01021-2
published as Phys.Lett. B491 (2000) 190-198 · 10 pages, latex. 1 postscript figure included. Bound on the incoming focal lengths extended to strong-coupling terminated inflation. Section 3 expanded. Typos corrected and reference added. Final version to appear in Phys. Lett. B
arxiv created 2000/09/18 · openalex publication_date 2000/10/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study inflation and entropy generation in a recently proposed pre-big-bang model universe produced in a collision of gravitational and dilaton waves. It is shown that enough inflation occurs provided the incoming waves are sufficiently weak. We also find that entropy in this model is dynamically generated as the result of the nonlinear interaction of the incoming waves, before the universe enters the phase of dilaton driven inflation. In particular, we give the scaling of the entropy produced in the collision in terms of the focusing lengths of the incoming waves.