论文标题
几何暗物质
Geometric Dark Matter
论文作者
论文摘要
从平坦的旋转曲线到结构形成所需的各种现象所需的暗物质似乎不仅是中性和长期的，而且还与普通物质相比高度隐居。在这里，我们表明，公制的重力涉及度量张量和仿射连接作为两个独立领域，以最小的形式动态减少到通常的重力和一个大量的矢量场。仅与夸克，瘦素和重力相互作用的矢量是中性的，长寿（大于宇宙年龄），当时其质量范围为$ 9.4 \ {\ rm mev} <m_y <m_y <28.4 \ {\ rm mev} $。其核子的散射横截面比电流边界低约60个数量级，无法促进直接检测暗物质。该属性为暗物质搜索的原因和如何方式提供了解释。我们表明，由于其几何来源，$ y__ $ $ $y_μ$与标量和衡量玻色子没有。它仅伴随着费米子。 $y_μ$的这一功能使其与文献中所有其他矢量暗物质候选者根本不同。我们提出的几何暗物质不仅在理论上，而且在天体基础上都是最小和自吻的，因为它的长寿所需的一切都是它的虚弱相互作用的性质。
The dark matter, needed for various phenomena ranging from flat rotation curves to structure formation, seems to be not only neutral and long-living but also highly secluded from the ordinary matter. Here we show that, metric-affine gravity, which involves metric tensor and affine connection as two independent fields, dynamically reduces, in its minimal form, to the usual gravity plus a massive vector field. The vector, which interacts with only the quarks, leptons and gravity, is neutral and long-living (longer than the age of the Universe) when its mass range is $9.4\ {\rm MeV} < M_Y < 28.4\ {\rm MeV}$. Its scattering cross section from nucleons, which is some 60 orders of magnitude below the current bounds, is too small to facilitate direct detection of the dark matter. This property provides an explanation for whys and hows of dark matter searches. We show that due to its geometrical origin the $Y_μ$ does not couple to scalars and gauge bosons. It couples only to fermions. This very feature of the $Y_μ$ makes it fundamentally different than all the other vector dark matter candidates in the literature. The geometrical dark matter we present is minimal and self-consistent not only theoretically but also astrophysically in that its feebly interacting nature is all that is needed for its longevity.
