Neutron Interferometry constrains dark energy chameleon fields

Abstract

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 $\times 10^7$~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 ${\phi }^n$.

7 pages, 4 figures

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Cited by in corpus (5)

• A Compendium of Chameleon Constraints
• Constraining symmetron fields with atom interferometry
• Atomic Interferometry Test of Dark Energy
• Standard Electroweak Interactions in Gravitational Theory with Chameleon Field and Torsion
• Quartic Chameleons: Safely Scale-Free in the Early Universe