Stability and hierarchy problems in string inspired braneworld scenarios
arXiv:0704.3119 · doi:10.1209/0295-5075/83/51002
Abstract
We generalise the RS braneworld model by taking into account a general stringy bulk containing the scalar dilaton field and the two-form Kalb-Ramond field, apart from gravity. Assuming small fluctuations around a RS background, the back-reacted warp factor is obtained. It is shown that the fine tuning problem in connection with the Higgs mass reappears in a new guise and the effective modular potential fails to stabilise the braneworld.
5 Pages, Revtex. Minor changes. To appear in Europhysics Letters
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