Selftuning and its footprints

Details Selftuning and its footprints Selftuning and its footprints

2003-09-03

arxiv.org/abs/hep-th/0309042v3

Nucl.Phys.B677:405-429,2004

Physics

High Energy Physics

High Energy Physics - Theory

28 pages, JHEP style. v2: typos corrected and references added. Published version

Scientific paper

10.1016/j.nuclphysb.2003.11.003

We re-consider the self tuning idea in brane world models of finite volume. We notice that in a large class of self tuning models, the four dimensional physics is sensitive to the vacuum energy on the brane. In particular the compactification volume changes each time the tension of the brane is modified: consequently, observable constants, as the effective Planck mass or masses of matter fields, change as well. We notice that the self tuning mechanism and the stabilization mechanism of the size of the extra dimensions are generically in apparent conflict. We focus on a self tuning model in six spacetime dimensions to analyze how the above considerations are explicitely realized.

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