Dynamics of Scalar field in a Brane World

A. Mazumdar; A. R. Liddle; A. S. Majumdar; A. Vilenkin; B. Ratra; B. Spokoiny; B. Whitt; C. Csaki; D. Langlois; D. Wands; E. J. Copeland; E. J. Copeland; F. Lucchin; G. Huey; I. Antoniadis; I. Zlatev; J. D. Barrow; J. Khoury; J. M. Cline; J. Preskill; K. Maeda; K. Maeda; Kei-ichi Maeda; Kohta Yamamoto; L. H. Ford; L. Mendes; L. P. Grishchuk; L. Randall; L. Randall; N. Arkani-Hamed; N. Goheer; N. Kaloper; P. Binétruy; P. Binétruy; P. Hořava; P. Hořava; P. J. Steinhardt; P. Kanti; R. M. Hawkins; R. Maatens; R. R. Caldwell; S. C. Davis; S. Mizuno; S. Mukohyama; S. Tsujikawa; Shuntaro Mizuno; T. Nihei; T. Shiromizu; T. W. B. Kibble; V. A. Rubakov; V. Sahni; Y. Shtanov

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Dynamics of Scalar field in a Brane World

Abstract

We study the dynamics of a scalar field in the brane cosmology. We assume that a scalar field is confined in our 4-dimensional world. As for the potential of the scalar field, we discuss three typical models: (1) a power-law potential, (2) an inverse-power-law potential, and (3) an exponential potential. We show that the behavior of the scalar field is very different from a conventional cosmology when the energy density square term is dominated.Comment: 15pages, 8figures, submitted to Physical Review

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