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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster VII
Q 56.16: Poster
Donnerstag, 14. März 2024, 17:00–19:00, KG I Foyer
Dark Energy search using atom interferometry in microgravity — •Sukhjovan Singh Gill1, Magdalena Misslisch1, Charles Garcion1, Ioannis Papadakis2, Baptist Piest1, Vladimir Schkolnik2, Sheng-Wey Chiow3, Nan Yu3, and Ernst Maria Rasel1 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Germany 30167 — 2Institut für Physik, Humboldt Universität zu Berlin, Berlin, Germany 12489 — 3Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA 91109
The nature of Dark energy is one of the biggest quests of modern physics. It is needed to explain the accelerated expansion of the universe. In the chameleon theory, a hypothetical scalar field is proposed, which might affect small test masses like dilute atomic gases. In the vicinity of bulk masses, the chameleon field is hidden due to a screening effect making the model in concordance with observations. Dark Energy Search using Interferometry in the Einstein-Elevator(DESIRE) studies the chameleon field model for dark energy using Bose-Einstein Condensate of 87Rb atoms as a source in a microgravity environment. The Einstein-Elevator provides 4 seconds of microgravity time for multi-loop atom interferometry to search for phase contributions induced by chameleon scalar fields shaped by a changing mass density in their vicinity. This method suppresses the influence of vibrations, gravity gradients and rotations via common mode rejection. The specially designed test mass suppresses gravitational effects from self-mass and its environment. This work will further constrain thin-shell models for dark energy by several orders of magnitude.
Keywords: Dark Energy; Atom Interferometry; Microgravity