Cos(M)ological Solutions in M- and String Theory

Abstract

We consider solutions to the cosmological equations of motion in 11 dimensions with and without 4-form charges. We show explicitly the correspondence between some of these solutions and known solutions in 10 dimensional string gravity. New solutions involving combinations of 4-form charges are explored. We also speculate on the possibility of removing curvature singularities present in 10D theories by oxidizing to 11D.

29 pages, latex, 15 ps figures, restored a missing sign in terms proportional to $Q^2$, leading to some alterations in quantitative statements, but without qualitative changes in conclusions

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• On the Realization of Assisted Inflation
• Boundary Inflation
• Topological $R^4$ Inflation
• D-branes and Cosmology
• M-theory resolution of four-dimensional cosmological singularities via U-duality
• Generality of Singularity Avoidance in Superstring Theory: Anisotropic Case
• Cosmological Solution in M-theory on S^1/Z_2
• Dynamics of M-Theory Cosmology
• Qualitative Analysis of String Cosmologies
• Consequences of U dualities for Intersecting Branes in the Universe
• 10 + 1 to 3 + 1 in an Early Universe with mutually BPS Intersecting Branes
• Gravitating Brane Systems: Some General Theorems
• A note on inflationary string cosmology
• Anisotropic String Cosmology at Large Curvatures
• Resolving the singularity of the Hawking-Turok type instanton
• Minisuperspace Models in M-theory