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arXiv 0909.0023hep-thgr-qchep-ph
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6D超引力的膜引力相互作用

Brane Gravitational Interactions from 6D Supergravity

A. Salvio

摘要:

我们在一个6D膜世界的情形下研究了大质量引力子对4D引力的贡献,其体场内容可以包括6D手征规范超引力。我们考虑一类具有3-膜、4D Poincare对称性和内部空间轴对称性的一般解。我们表明,这些贡献,我们计算分析,可以独立的膜真空能量作为上述余维两膜世界的几何和拓扑性质的后果。这些结果支持了这样一种观点,即在这样的模型中,引力相互作用可以与膜真空能量解耦。

英文摘要:

We investigate the massive graviton contributions to 4D gravity in a 6D brane world scenario, whose bulk field content can include that of 6D chiral gauged supergravity. We consider a general class of solutions having 3-branes, 4D Poincare symmetry and axisymmetry in the internal space. We show that these contributions, which we compute analytically, can be independent of the brane vacuum energy as a consequence of geometrical and topological properties of the above-mentioned codimension two brane world. These results support the idea that in such models the gravitational interactions may be decoupled from the brane vacuum energy.

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