Cosmological constant and Brane New World

Details Cosmological constant and Brane New World Cosmological constant and Brane New World

2001-05-30

arxiv.org/abs/hep-th/0105300v2

Rev.Mex.Fis.48:19-22,2002

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX 8 pages, minor changes to match with published version, one reference is added

Scientific paper

The estimation of the cosmological constant in inflationary Brane New World models is done. It is shown that basically it is quite large, of the same order as in anomaly-driven inflation. However, for some fine-tuning of bulk gravitational constant and AdS scale parameter $l^2$ it may be reduced to sufficiently small value. Bulk higher derivative AdS gravity with quantum brane matter may also serve as the model where small positive cosmological constant occurs.

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