Naked singularity and Gauss-Bonnet term in brane world scenarios
Apr, 2000Citations per year
Abstract:
We add a Gauss-Bonnet term to the Einstein-Hilbert action and study the recent proposal to solve the cosmological constant problem. We also consider the possibility of adding a dilaton potential to the action. In the absence of supersymmetry, we obtain first order Bogomol'nyi equation as a solution-generating method in our scenario. When the coefficient of the Gauss-Bonnet term is positive, the dilaton potential is bounded below. Assuming a simple double-well potential, the dilaton field is found to be a kink in the fifth dimension.- 11.10.Kk
- 04.50.+h
- 12.60.-i
- Extra dimension
- Gauss–Bonnet
- Naked singularity
- membrane model
- Gauss-Bonnet term
- cosmological constant
- dilaton: potential
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