Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10714446 | Physica B: Condensed Matter | 2011 | 5 Pages |
Abstract
Physics at the Planck scale could be revealed by looking for tiny violations of fundamental symmetries in low energy experiments. In 2008, a sensitive test of the isotropy of the universe has been performed with stored ultracold neutrons (UCN), this is the first clock-comparison experiment performed with free neutrons. During several days we monitored the Larmor frequency of neutron spins in a weak magnetic field using the Ramsey resonance technique. A nonzero cosmic axial field, violating rotational symmetry, would induce a daily variation of the precession frequency. Our null result constitutes one of the most stringent tests of Lorentz invariance to date.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
I. Altarev, G. Ban, G. Bison, K. Bodek, M. Daum, M. Fertl, P. Fierlinger, B. Franke, E. Gutsmiedl, W. Heil, R. Henneck, M. Horras, N. Khomutov, K. Kirch, S. Kistryn, A. Kraft, A. Knecht, P. Knowles, G. Zsigmond,