Brany Liouville Inflation
arXiv:gr-qc/0407089 · doi:10.1088/1367-2630/6/1/171
Abstract
We present a specific model for cosmological inflation driven by the Liouville field in a non-critical supersymmetric string framework, in which the departure from criticality is due to open strings stretched between the two moving Type-II 5-branes. We use WMAP and other data on fluctuations in the cosmic microwave background to fix parameters of the model, such as the relative separation and velocity of the 5-branes, respecting also the constraints imposed by data on light propagation from distant gamma-ray bursters. The model also suggests a small, relaxing component in the present vacuum energy that may accommodate the breaking of supersymmetry.
23 pages LATEX, two eps figures incorporated; version accepted for publication in NJP
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