Brany Liouville Inflation

Details Brany Liouville Inflation Brany Liouville Inflation

2004-07-23

arxiv.org/abs/gr-qc/0407089v4

New J.Phys.6:171,2004

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

23 pages LATEX, two eps figures incorporated; version accepted for publication in NJP

Scientific paper

10.1088/1367-2630/6/1/171

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.

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