Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2003-10-17
Phys.Rev. D70 (2004) 044011
Physics
High Energy Physics
High Energy Physics - Theory
28 pages, 2 figures. Expanded version, essentially combining previous version with gr-qc/0305087
Scientific paper
10.1103/PhysRevD.70.044011
We show that even in the simple framework of pure Kaluza-Klein gravity the shape moduli can generate potentials supporting inflation and/or quintessence. Using the shape moduli as the inflaton or quintessence-field has the additional benefit of being able to explain symmetry breaking in a natural geometric way. A numerical analysis suggests that in these models it may be possible to obtain sufficient e-foldings during inflation as well as a small cosmological constant at the current epoch (without fine tuning), while preserving the constraint coming from the fine structure constant.
Biswas Tirthabir
Jaikumar Prashanth
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