Conformally Invariant Braneworld and the Cosmological Constant

Details Conformally Invariant Braneworld and the Cosmological Constant Conformally Invariant Braneworld and the Cosmological Constant

2003-03-12

arxiv.org/abs/gr-qc/0303048v2

Phys.Lett. B580 (2004) 87-92

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, latex, no figures, few typos corrected

Scientific paper

A six dimensional braneworld scenario based on a model describing the interaction of gravity, gauge fields and 3+1 branes in a conformally invariant way is described. The action of the model is defined using a measure of integration built of degrees of freedom independent of the metric. There is no need to fine tune any bulk cosmological constant or the tension of the two (in the scenario described here) parallel branes to obtain zero cosmological constant, the only solutions are those with zero 4-D cosmological constant. The two extra dimensions are compactified in a "football" fashion and the branes lie on the two opposite poles of the compact "football-shaped" sphere.

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