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Experimentally probing the shape of extra dimensions

机译:实验探索额外尺寸的形状

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Theories with compact extra dimensions have become increasingly popular. In some theories the standard model particles are confined to our four-dimensional world and only gravity can propagate in the extra dimensions. In these models the size of the extra dimensions can be as large as hundreds of microns. The functional dependence of the gravitational force on distance is well known at both large and small distances compared to the size of the extra dimensions; for two extra dimensions, for example, it varies from 1/r(2) to 1/r(4) as the distance decreases. However, the dependence for intermediate distances has not been fully calculated. We determine this dependence as a function of both the size of the extra dimensions and the possible angle between the extra dimensional unit vectors and show that high precision measurements of the gravitational force would make possible the determination of the shape of the extra dimensions. (c) 2006 American Association of Physics Teachers.
机译:具有紧凑的额外尺寸的理论已变得越来越流行。在某些理论中,标准模型粒子被限制在我们的四维世界中,只有重力才能在额外维中传播。在这些模型中,额外尺寸的大小可能高达数百微米。与额外尺寸的大小相比,无论距离大小,重力对距离的功能依赖性都是众所周知的。例如,对于两个额外的维度,随着距离的减小,它从1 / r(2)变为1 / r(4)。但是,中间距离的依赖性尚未完全计算出来。我们将这种依赖关系确定为额外尺寸的大小和额外尺寸单位矢量之间可能的角度的函数,并表明对重力的高精度测量将有可能确定额外尺寸的形状。 (c)2006年美国物理教师协会。

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