Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-05-14
Astronomy and Astrophysics
Astrophysics
8 pages, 7 figures; presented at 43rd Rencontres de Moriond, La Thuile (Val d'Aosta, Italy) March 15 - 22, 2008. Includes new
Scientific paper
I summarize recent work on (1) constraining spike-like features in the cosmic microwave background and large scale structure; (2) nonstandard Friedmann equation in stabilized warped 6D brane cosmology, with applications to inflation; and (3) nonlocal inflation models, motivated by string theory, which can yield large nongaussian CMB fluctuations. Work in collaboration with N. Barnaby, T. Biswas, F. Chen, L. Hoi, G. Holder and S. Kanno.
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