Test of Cosmic Spatial Isotropy for Polarized Electrons Using a Rotatable Torsion Balance
| dc.creator | Hou, Li-Shing | |
| dc.creator | Ni, Wei-Tou | |
| dc.creator | Li, Yu-Chu M. | |
| dc.date | 2000-09-04 | |
| dc.date.accessioned | 2026-07-07T11:48:26Z | |
| dc.date.available | 2026-07-07T11:48:26Z | |
| dc.description | To test the cosmic spatial isotropy, we use a rotatable torsion balance carrying a transversely spin-polarized ferrimagnetic Dy_{6}Fe_{23} mass. With a rotation period of one hour, the period of anisotropy signal is reduced from one sidereal day by about 24 times, and hence the 1/f noise is greatly reduced. Our present experimental results constrain the cosmic anisotropy Hamiltonian H = C_{1} sigma_{1} + C_{2} sigma_{2} + C_{3} sigma_{3} (sigma_{3} is in the axis of earth rotation) to (C_{1}^{2} +C_{2}^{2})^{1/2} = (1.8 +- 5.3) X 10^{-21} eV and | C_{3} | = (1.2 +- 3.5) X 10^{-19} eV. This improves the previous limits on (C_{1},C_{2}) by 120 times and C_{3} by a factor of 800. | |
| dc.description | 6 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/physics/0009012 | |
| dc.identifier | http://arxiv.org/abs/physics/0009012 | |
| dc.identifier | Phys.Rev.Lett.90:201101,2003 | |
| dc.identifier | doi:10.1103/PhysRevLett.90.201101 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/202922 | |
| dc.subject | Space Physics | |
| dc.title | Test of Cosmic Spatial Isotropy for Polarized Electrons Using a Rotatable Torsion Balance | |
| dc.type | text |