Prospects for electron spin-dependent short-range force experiments with rare earth iron garnet test masses

被引：39

作者：

Leslie, T. M. ^{[1
,2
]}

Weisman, E. ^{[1
,2
]}

Khatiwada, R. ^{[1
,2
,3
]}

Long, J. C. ^{[1
,2
]}

机构：

[1] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[2] IU Ctr Explorat Energy & Matter, Bloomington, IN 47408 USA

[3] Indiana Univ Purdue Univ, Dept Phys, Indianapolis, IN 46202 USA

来源：

PHYSICAL REVIEW D | 2014年 / 89卷 / 11期

基金：

美国国家科学基金会;

关键词：

MOLECULAR-FIELD COEFFICIENTS; LOW-ENERGY FRONTIER; HYPERFINE; SEARCH; MUONIUM;

D O I：

10.1103/PhysRevD.89.114022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A study of the possible interactions between fermions assuming only rotational invariance has revealed 15 forms for the potential involving the fermion spins. We review the experimental constraints on unobserved macroscopic, spin-dependent interactions between electrons in the range below 1 cm. An existing experiment, using 1 kHz mechanical oscillators as test masses, has been used to constrain mass-coupled forces in this range. With suitable modifications, including spin-polarized test masses, this experiment can be used to explore all 15 possible spin-dependent interactions between electrons in this range with unprecedented sensitivity. Samples of ferrimagnetic dysprosium iron garnet have been fabricated in the suitable test mass geometry and shown to have spin densities on the order of 10(20) h/cm(3) with very low intrinsic magnetism.

引用

页数：12

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