2 papers
gr-qc1997
Chaotic exit to inflation: the dynamics of pre-inflationary universes
H. P. de Oliveira, I. Damiao Soares, T. J. Stuchi
We show that anisotropic Bianchi type-IX models, with matter and cosmological constant have chaotic dynamics, connected to the presence of a saddle-center in phase space. The topol…
astro-ph1994
Dynamics of Massive Shells Ejected in a Supernova Explosion
D. Nunez, H. P. de Oliveira
An expanding shell is accelerated outward by radiation from the remnant star and slowed by ram pressure and accretion as it plows into the interstellar medium. We set up the genera…