期刊
PHYSICS LETTERS B
卷 743, 期 -, 页码 310-314出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2015.02.063
关键词
Chameleon field; Dark energy; Neutron interferometry
资金
- Austrian Science Fonds (FWF) [I529-N20, I530-N20, I531-N20, I689-N16, I862-N20]
- [ILL-1132]
- Austrian Science Fund (FWF) [I 689, I 531, I 862, I 530] Funding Source: researchfish
- Austrian Science Fund (FWF) [I530, P26781, I862, I531] Funding Source: Austrian Science Fund (FWF)
We present phase shift measurements for neutron matter waves in vacuum and in low pressure Helium using a method originally developed for neutron scattering length measurements in neutron interferometry. We search for phase shifts associated with a coupling to scalar fields. We set stringent limits for a scalar chameleon field, a prominent quintessence dark energy candidate. We find that the coupling constant beta is less than 1.9 x 10(7) for n = 1 at 95% confidence level, where n is an input parameter of the self-interaction of the chameleon field phi inversely proportional to phi(n). (C) 2015 The Authors. Published by Elsevier B.V.
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