Low energy effective theory on a regularized brane in 6D gauged chiral supergravity
Low energy effective theory on a regularized brane in 6D gauged chiral supergravity
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6D 规范手性超重力中正则膜的低能有效理论
DOI:
10.1088/1475-7516/2007/12/006
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发表时间:
2007
影响因子:
6.4
通讯作者:
Arroja F
中科院分区:
文献类型:
--
作者:
Arroja F
We derive the low energy effective theory on a brane in six-dimensional chiral supergravity. The conical 3-brane singularities are resolved by introducing cylindrical 4-branes of co-dimension 1 whose interiors are capped by a regular spacetime. The effective theory is described by the Brans–Dicke (BD) theory with the BD parameter given by ω BD= 1/2. The BD field originates from a modulus which is associated with the scaling symmetry of the system. If the dilaton potentials on the branes preserve the scaling symmetry, the scalar field has an exponential potential in the Einstein frame. We show that the time dependent solutions driven by the modulus in the four-dimensional effective theory can be lifted up to the six-dimensional exact solutions found in the literature. On the basis of the effective theory, we discuss a possible way to stabilize the modulus to recover standard cosmology and also study the implication for the cosmological constant problem.
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DOI:
10.1016/j.nuclphysb.2006.10.025
发表时间:
2007
期刊:
Nuclear Physics
影响因子:
--
作者:
Hyun Min Lee;A. Papazoglou
通讯作者:
A. Papazoglou
影响因子:
5.4
作者:
D. Shih;Xi Yin
通讯作者:
Xi Yin
影响因子:
5.4
作者:
E. Papantonopoulos;A. Papazoglou;V. Zamarias
通讯作者:
V. Zamarias
影响因子:
4.4
作者:
K. Koyama;K. Koyama;F. Arroja
通讯作者:
F. Arroja
影响因子:
3.5
作者:
F. Arroja;K. Koyama
通讯作者:
K. Koyama