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Quantum Fluctuations of Bulk Inflaton in Inflationary Brane World

Shinpei Kobayashi·Kazuya Koyama·Jiro Soda
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Abstract

The inflationary scenario for the brane world driven by the bulk inflaton is proposed. The quantum fluctuations of the inflaton is calculated and compared to those of the conventional 4-dimensional inflationary scenario. It is shown that the deviation of the primordial spectrum of this model from that of the conventional one is too small to be observed even if $AdS$ radius is very large. Hence, it turns out that the inflation caused by the bulk inflaton is viable in the context of brane world cosmology.

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Shinpei Kobayashi, Kazuya Koyama, Jiro Soda. 2000-09-21. Quantum Fluctuations of Bulk Inflaton in Inflationary Brane World. https://doi.org/10.1016/s0370-2693(01)00137-x

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