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TOWARDS A NONSINGULAR UNIVERSE a
Author(s) -
BRANDENBERGER ROBERT H.
Publication year - 1993
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1993.tb43916.x
Subject(s) - theoretical physics , invertible matrix , general relativity , action (physics) , construct (python library) , einstein , curvature , singularity , classical mechanics , mathematics , physics , pure mathematics , mathematical analysis , computer science , geometry , quantum mechanics , programming language
A unified theory of all forces should be nonsingular. In such a unifiedtheory, Einstein's general relativity will be a very low curvature effectivetheory. At larger curvatures, new terms will become important. The questionthen arises as to whether it is possible to construct an effective action forgravity which leads to a nonsingular theory. In this work, we construct aneffective action for gravity in which all homogenerous and isotropic solutionsare nonsingular. In particular, there is neither a big bang nor a big crunch.Preliminary work indicates that our construction provides a theory in whichanisotropies decrease at large curvatures, and in which the inside of a blackhole is singularity free.Comment: 9 pages, 2 figures (available from the author), uses phyzzx, BROWN-HET-89