arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1702.03050astro-ph.COphysics.atom-ph
收藏

通过冷原子实验演示变色龙场的第五种力

Experimental demonstration of a fifth force due to chameleon field via cold atoms

Hai-Chao Zhang

摘要:

我们用冷原子实验测试了第五种力。宇宙的加速膨胀意味着可能存在一个遍布宇宙的标量场来驱动加速。这个场将导致正常物质物体之间的可检测力。变色龙场理论指出,在源物体表面附近的薄壳中,力应该很强,但在源物体的内部和外部,力应该被大大抑制。我们使用两个原子云:一个作为源,另一个作为测试质量,所以测试质量可以通过源质量的薄壳区域。我们探测到了变色龙力,得到了物质与场的耦合常数约为4.5E ~(11)。变色龙力在短距离上比牛顿引力大得多;相互作用范围足够短,可以满足所有偏离广义相对论的实验界限。

英文摘要:

We tested a fifth force using cold atom experiments. The accelerated expansion of the universe implies the possibility of the presence of a scalar field throughout the universe driving the acceleration. This field would result in a detectable force between normal-matter objects. Theory of the chameleon field states that the force should be strong in a thin shell near the surface of a source object but greatly suppressed inside and outside of the source object. We used two atom clouds: one as the source and the other as the test mass; so the test mass can pass through the thin-shell region of the source mass. We detected the chameleon force and obtained the couple constant of about 4.5E11 between matter and the field. The chameleon force is considerably larger than Newtonian gravity at short distance; the interaction range is short enough to satisfy all experimental bounds on deviations from general relativity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑