arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0802.0762hep-phastro-phgr-qc
收藏

变色龙矢量玻色子

Chameleon Vector Bosons

A. E. Nelson, J. Walsh

摘要:

我们表明,对于一个矢量粒子耦合到一个保守的U(1)电荷介导的力,表观范围和强度可以取决于大小和密度的源,以及接近其他来源。这种“变色龙”效应是由于屏蔽了带电标量。这种屏蔽可以削弱天体物理对新规范玻色子的约束。作为一个例子,我们考虑的约束变色龙规范B-L。我们表明,虽然卡西米尔测量大大限制任何B-L力比重力强得多,范围超过0.1微米,仍然有一个实验窗口的长距离变色龙B-L力。这样的力可能比重力强得多,并且在真空中具有长或无限的范围,但是在地球表面附近具有小于一微米的有效范围。

英文摘要:

We show that for a force mediated by a vector particle coupled to a conserved U(1) charge, the apparent range and strength can depend on the size and density of the source, and the proximity to other sources. This "chameleon" effect is due to screening from a light charged scalar. Such screening can weaken astrophysical constraints on new gauge bosons. As an example we consider the constraints on chameleonic gauged B-L. We show that although Casimir measurements greatly constrain any B-L force much stronger than gravity with range longer than 0.1 microns, there remains an experimental window for a long range chameleonic B-L force. Such a force could be much stronger than gravity, and long or infinite range in vacuum, but have an effective range near the surface of the earth which is less than a micron.

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。

↑