1993/10/20 by S. Mukherjee, Mukherjee, S., N. K. Dadhich +1
Physics and Astronomy · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #gr-qc
paper · pdf · doi:10.48550/arxiv.gr-qc/9310028
12pages, Normal Tex
arxiv created 1993/10/20 · arxiv updated 2009/11/30
A chaotic model of the early universe within the framework of the singularity-free solutions of Einstein's equation is suggested. The evolution of our universe at its early stage, starting out as a small domain of the parent universe, is governed by the dynamics of a classical scalar field ϕ . If in any such domain, larger than Planck length, ϕ happens to be very large,ϕ may develop a dominant inhomogeneous mode,leading to an anisotropic inflation of the universe. The particle ϕ is coupled to other particles, which are produced copiously after inflation and these thermalize leading to a rather low temperature universe (T ≥ 104 Gev). The electroweak B+L Baryogenesis is assumed to account for the observed baryon asymmetry. The universe now passes through a radiation-dominated phase, leading eventually to a matter-dominated universe, which is isotropic and homogeneous. The model does not depend on the details of Planck scale physics.