Football Shaped Extra Dimensions and the Absence of Self-Tuning

Details Football Shaped Extra Dimensions and the Absence of Self-Tuning Football Shaped Extra Dimensions and the Absence of Self-Tuning

2004-06-18

arxiv.org/abs/hep-th/0406158v2

JHEP0408:028,2004

Physics

High Energy Physics

High Energy Physics - Theory

Minor comments and a reference added

Scientific paper

10.1088/1126-6708/2004/08/028

There have been some recent claims that brane-worlds of co-dimension two in a 6D bulk with compact extra dimensions may lead to self-tuning of the effective 4D cosmological constant. Here we show that if a phase transition occurs on a flat brane, so as to change its tension, then the brane will not remain flat. In other words, there is really no self-tuning in such models, which can in fact be understood in four-dimensional terms and are therefore subject to Weinberg's no-go theorem.

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