Fermion mass splitting, stability and naturalness problems in warped braneworld models

Details Fermion mass splitting, stability and naturalness problems in warped braneworld models Fermion mass splitting, stability and naturalness problems in warped braneworld models

2007-11-06

arxiv.org/abs/0711.0805v1

AIP Conf.Proc.939:236-246,2007

Physics

High Energy Physics

High Energy Physics - Theory

11 Pages, Latex, 3 figures, Contributed to International Workshop on Theoretical High Energy Physics, Roorkee, India, 15 to 20

Scientific paper

10.1063/1.2803810

We generalize the Randall Sundrum warped braneworld model in six and higher dimension and propose a resolution to the mass hierarchy among the standard model fermions. The fine tuning problem in connection with the scalar mass however is shown to reappear in a new guise in five dimensional warped model when the two form antisymmetric tensor fields, a massless string mode, propagates in the bulk. Finally the issue of modulus stabilization is re-examined in presence of a bulk scalar by considering it's back-reaction on the background geometry. The role of higher derivative term of the bulk scalar is shown to be crucial to achieve modulus stabilization.

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