Nonsingular Cosmology and Planck Scale Physics ⋆
نویسنده
چکیده
New Planck scale physics may solve the singularity problems of classical general relativity and may lead to interesting consequences for very early Universe cosmology. Two approaches to these questions are reviewed in this article. The first is an effective action approach to including the effects of Planck scale physics in the basic framework of general relativity. It is shown that effective actions with improved singularity properties can be constructed. The second approach is based on superstring theory. A scenario which eliminates the big bang singularity and possibly explains the dimensionality of space-time is reviewed. ⋆ Invited lecture at the International Workshop on Planck Scale Physics, Puri, India, Dec. 12-21, 1995. To be published in the proceedings (World Scientific, Singapore, 1995).
منابع مشابه
Nonsingular Cosmology and Planck Scale Physicss?
New Planck scale physics may solve the singularity problems of classical general relativity and may lead to interesting consequences for very early Universe cosmology. Two approaches to these questions are reviewed in this article. The rst is an eeective action approach to including the eeects of Planck scale physics in the basic framework of general relativity. It is shown that eeective action...
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