The more general case of a tensor field is similar but more complicated. 较普遍的张量场情况大致相似，但是更为复杂。
But if the field changes or oscillates quickly enough, it produces a gravitational attraction, just like ordinary or dark matter. 不过，要是纯量场变化或是振荡得够快，它就会产生重力相吸效应，一如普通物质或是暗物质。
