Remarks on M Theoretic Cosmology

Abstract

I present cosmological arguments which point towards a Horava-Witten like picture of the universe, with the unification scale of order the fundamental gravitational scale. The SUSY breaking scale is determined by the dynamics of gauge fields which are weakly coupled at the fundamental scale. Bulk moduli whose potential originates at short distances are the inflatons, while bulk moduli whose potential originates from SUSY breaking are the origin of the energy density in the present era. The latter decay just before nucleosynthesis, and a consistent theory of baryogenesis requires that there be renormalizable baryon number violating interactions at the TeV scale. The dark matter is a boundary modulus, perhaps the QCD axion, and the temperature of matter radiation equality is related to the ratio between the fundamental and effective four dimensional Planck scales. The same ratio determines the amplitude of fluctuations in the microwave background.

JHEP LaTeX, 16 pages

References in corpus (11)

• Non-Perturbative Superpotentials In String Theory
• Thermal Inflation and the Moduli Problem
• Couplings and Scales in Strongly Coupled Heterotic String Theory
• Fermion masses, neutrino oscillations, and proton decay in the light of SuperKamiokande
• Modular Cosmology
• Coping With Strongly Coupled String Theory
• The Cosmology of String Theoretic Axions
• String Islands
• New M-theory Backgrounds with Frozen Moduli
• Quantum Moduli Spaces of $N=1$ String Theories
• Seeking the Ground State of String Theory

Cited by in corpus (14)

• Signatures of Short Distance Physics in the Cosmic Microwave Background
• Prospects of Inflation
• Remarks on Tachyon Driven Cosmology
• Holographic Cosmology 3.0
• Models of inflation liberated by the curvaton hypothesis
• Remarks on the Racetrack Scheme
• Towards a Solution of the Moduli Problems of String Cosmology
• TASI Lectures: Cosmology for String Theorists
• Hybrid Inflation and the Moduli Problem
• M-Theory Moduli Space and Cosmology
• Which is the best inflation model?
• F-term SUSY Breaking and Moduli
• String Theory, Large Dimensions and Supersymmetry
• Light Scalars and the Cosmos: Nambu-Goldstone and Otherwise