Bonn 2025 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 27: Poster – Ultra-cold Atoms, Ions and BEC (joint session A/Q)
Q 27.5: Poster
Tuesday, March 11, 2025, 14:00–16:00, Tent
Dark energy search using atom interferometry in the Einstein-Elevator — •Magdalena Misslisch1, Sukhjovan Singh Gill1, Charles Garcion1, Alexander Heidt2, Ioannis Papadakis3, Vladimir Schkolnik3, Sheng-wey Chiow4, Nan Yu4, Christoph Lotz2, and Ernst Maria Rasel1 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Germany — 2Institut für Transport- und Automatisierungstechnik, Leibniz Universität Hannover, Germany — 3Institut für Physik, Humboldt Universität zu Berlin, Germany — 4Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
Dark energy is estimated to represent around 70 % of the universe energy budget, yet its nature remains unknown. A possible solution for this problem is the proposed scalar chameleon field whose effects are hidden from usual high density probe particles due to a screening effect. The project DESIRE (Dark energy search by atom interferometry in the Einstein-Elevator) aims to detect chameleon dark energy by atom interferometry in microgravity. In this experiment multi-loop interferometry with Rb-87 Bose-Einstein condensates will be performed to search for phase contributions induced by chameleon scalar fields shaped by a changing mass density in their vicinity. Atoms traverse a periodic test mass designed in cooperation with the JPL while accumulating the signal within a multi-loop interferometer over several seconds. To reach these long interaction times the experiment will be performed in the Einstein-Elevator, an active drop tower in Hanover that allows up to 4 s in microgravity.
Keywords: Dark Energy; Atom Interferometry; Microgravity