[Zurück]

H. Lemmel, P. Brax, A. Ivanov, T. Jenke, G. Pignol, M. Pitschmann, T. Potocar, M. Wellenzohn, M. Zawisky, H. Abele:
"Neutron interferometry constrains dark energy chameleon fields";
Physics Letters B, 743 (2015), 0; S. 310 - 314.

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 × 10^7 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 ϕ^n.

Chameleon field, Dark energy, Neutron interferometry

http://dx.doi.org/10.1016/j.physletb.2015.02.063