Towards a Nonsingular Universe

Details Towards a Nonsingular Universe Towards a Nonsingular Universe

1993-02-11

arxiv.org/abs/gr-qc/9302014v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, 2 figures (available from the author), uses phyzzx, BROWN-HET-890

Scientific paper

10.1111/j.1749-6632.1993.tb43916

A unified theory of all forces should be nonsingular. In such a unified theory, Einstein's general relativity will be a very low curvature effective theory. At larger curvatures, new terms will become important. The question then arises as to whether it is possible to construct an effective action for gravity which leads to a nonsingular theory. In this work, we construct an effective action for gravity in which all homogenerous and isotropic solutions are nonsingular. In particular, there is neither a big bang nor a big crunch. Preliminary work indicates that our construction provides a theory in which anisotropies decrease at large curvatures, and in which the inside of a black hole is singularity free.

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