DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2014 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

GR: Fachverband Gravitation und Relativitätstheorie

GR 21: Experimental Gravitation III

GR 21.1: Talk

Thursday, March 20, 2014, 14:45–15:05, SPA SR220

Gravity resonance spectroscopy constrains dark energy and dark matter scenarios — •Tobias Jenke1, Gunther Cronenberg1, Hanno Filter1, Peter Geltenbort2, Andrei N. Ivanov1, Thorsten Lauer3, Tobias Lins1, Heiko Saul1, Ulrich Schmidt4, and Hartmut Abele11Atominstitut, TU Wien, Wien, Austria — 2Institut Laue-Langevin, Grenoble, France — 3FRM II, TU München, Garching — 4Physikalisches Institut, Universität Heidelberg, Heidelberg

Modern astronomical observations clearly point to the existence of dark energy and dark matter. Their true nature and content remain a mystery however. The two most obvious candidates for dark energy are either Einstein’s cosmological constant or quintessence theories. In particular the idea that chameleon scenarios, a realization of quintessence with a coupling to matter, may exist, is attracting high interest of a growing community.

Here, we present results from the qBounce measurements using ultracold neutrons. Our observation technique is based on Rabi-spectroscopy of bound quantum states in the gravity potential of the earth, devoid of electromagnetic perturbations. As yet undiscovered particles of dark matter or dark energy would introduce a measurable energy shift, the result delivers severe restrictions on any gravity-like interaction. The present accuracy indicates that gravity is understood at the level of Δ E = 10−14 eV. Hence, we can present experimental limits for dark-energy chameleons fields and the pseudo-scalar interaction of an axion, a prominent dark matter particle.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2014 > Berlin