Constraining spacetime nonmetricity with neutron spin rotation inliquid 4He

Constraining spacetime nonmetricity with neutron spin rotation inliquid 4He
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液体 4He 中中子自旋旋转约束时空非度量性

DOI:
10.1016/j.physletb.2017.07.059
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发表时间:
2017
期刊:
PhysicsLettersB(2017)865–869
影响因子:
--
通讯作者:
RuiXu
RuiXu
中科院分区:
其他
文献类型:
--
作者:
RalfLehnert;W.M.Snow;ZhiXiao;RuiXu

文献摘要

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研究了与中子耦合的一般时空非度规性。在这种情况下,它表明,某些nonmetricity组件可以产生旋转的中子的自旋。从液氦中的慢中子传播中获得的关于这种效应的可用数据被用来限制在10− 22 GeV水平上的各向同性非度量分量。这些结果代表了非度量衡性参数的第一个极限,也是物质内部非度量衡性的第一个测量结果。
General spacetime nonmetricity coupled to neutrons is studied. In this context, it is shown that certain nonmetricity components can generate a rotation of the neutron’s spin. Available data on this effect obtained from slow-neutron propagation in liquid helium are used to constrain isotropic nonmetricity components at the level of 10−22GeV. These results represent the first limit on the nonmetricity ζ(6)2S000parameter as well as the first measurement of nonmetricity inside matter.