Inhomogeneity and the onset of inflation

Details Inhomogeneity and the onset of inflation Inhomogeneity and the onset of inflation

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phrvl..64.2852g&link_type=abstract

Physical Review Letters, Volume 64, Issue 24, June 11, 1990, pp.2852-2855

Physics

64

Particle-Theory And Field-Theory Models Of The Early Universe, Exact Solutions

Scientific paper

We study numerically the onset of inflation under inhomogeneous initial conditions for various inflationary scenarios and various initial parameters. We solve the full Einstein equations for the gravitational field coupled to scalar-field and radiation-field sources, under the assumptions of spherical symmetry and a closed-universe background. We find that a large initial inhomogeneity suppresses the onset of inflation, and that the scalar field must have values suitable for inflation over a region of several horizon sizes for the inflationary phase to begin.

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