Details

Autor(en) / Beteiligte

• Lemmel, H.
• Brax, Ph
• Ivanov, A.N.
• Jenke, T.
• Pignol, G.
• Pitschmann, M.
• Potocar, T.
• Wellenzohn, M.
• Zawisky, M.
• Abele, H.

Titel

Neutron interferometry constrains dark energy chameleon fields

Ist Teil von

• Physics letters. B, 2015-04, Vol.743, p.310-314

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 β is less than 1.9×107 for n=1 at 95% confidence level, where n is an input parameter of the self-interaction of the chameleon field φ inversely proportional to φn.