张量四标量理论下的暗物质
Dark matter according to the tensor-four-scalars theory
摘要：
先前被建构为自旋2量子规范理论的大质量引力，在质量零极限上导致了对广义相对论的修正。作为质量理论的一个遗留物，矢量场v只与度规耦合。然而，耦合不涉及协变导数，因此v必须被认为是4个标量场。我们分析静态，球对称的解决方案，这个理论。从相应的测地线，我们找到了圆速度剖面。将其解释为来自暗密度分布，该理论预测了r为0时的平坦密度核心。但暗密度分布并不普遍。
英文摘要：
Massive gravity previously constructed as the spin-2 quantum gauge theory leads in the mass zero limit to a modification of general relativity. As a relic from the massive theory a vector field v survives which couples to the metric only. However, the coupling does not involve covariant derivatives so that v must be considered as 4 scalar fields. We analyse the static, spherically symmetric solutions of this theory. From the corresponding geodesics we find the circular velocity profile. Interpreting this as coming from a dark density profile, the theory predicts a flat density core for r going to 0. But the dark density profile is not universal.
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