标题： 引力激子作为暗物质 显示英文标题

标题： Gravitational Excitons as Dark Matter

摘要： 在早期的工作中指出，对于扭曲乘积时空，内部紧致化因子空间的共形（几何模数）激发应该作为外部时空中可观测的标量场出现。 在这里我们证明了这些标量场（引力激子）描述的是弱相互作用粒子，并且可以被视为暗物质组分。 引力激子的质量由理论的有效势形式和内部空间的稳定尺度决定。 这意味着不同的稳定尺度会导致不同类型的暗物质。 有效势发挥了重要作用。 一方面，它的极小值固定了内部空间可能的稳定尺度；另一方面，它们提供了有效宇宙学常数的可能值。 显示英文摘要

摘要： In earlier work it was pointed out that for warped product spacetimes the conformal (geometrical moduli) excitations of the internal compactified factor spaces should be observable as massive scalar fields in the external spacetime. Here we show that these scalar fields (gravitational excitons) describe weakly interacting particles and can be considered as dark matter component. Masses of the gravexcitons are defined by the form of the effective potential of the theory and the stabilization scales of the internal space. This implies that different stabilization scales result in different types of DM. An essential role is played by the effective potential. On the one hand, its minima fix possible stabilization scales of the internal spaces; on the other hand, they provide possible values for the effective cosmological constant.