Chameleon fields: Awaiting surprises for tests of gravity in space
Chameleon fields: Awaiting surprises for tests of gravity in space
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DOI：
10.1103/physrevlett.93.171104
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发表时间：
2004-10-22
影响因子：
8.6
通讯作者：
Weltman, A
中科院分区：
文献类型：
--
作者：
Khoury, J;Weltman, A
我们提出了一种新颖的场景，其中标量场获得的质量取决于当地物质密度：该场在地球上质量很大，密度很高，但在密度较低的太阳系中基本上是自由的。所有现有的重力测试均得到满足。我们预测，不久的将来卫星实验可以测量太空中与地球上不同的有效牛顿常数，并且违反等效原理的程度比目前实验室实验允许的程度更强。
We present a novel scenario where a scalar field acquires a mass which depends on the local matter density: the field is massive on Earth, where the density is high, but is essentially free in the solar system, where the density is low. All existing tests of gravity are satisfied. We predict that near-future satellite experiments could measure an effective Newton's constant in space different from that on Earth, as well as violations of the equivalence principle stronger than currently allowed by laboratory experiments.