qBounce : Unleashing the Potential of Ramsey Gravity Resonance Spectroscopy
Mardi 13 novembre 2018 11:00
- Duree : 1 heure
Lieu : Seminar Room 7/8 - ILL 1, 71 avenue des Martyrs, Grenoble
Orateur : Hartmut ABELE (ATOMINSTITUT - TU WIEN STADIONALLEE 2 A-1020 WIEN)
Despite the consistency and success of the standard model of particle physics (SM) and general relativity, our present understanding of the universe seems incomplete. Indications for this incompleteness are the significant over-estimation of the observed value of the vacuum energy density by the SM, and the presence of gravitating dark matter of unknown composition. Many theories have been developed to explain dark energy and dark matter, sparking a wave of new experiments to exclude or set limits on the parameters of these theories. For laboratory-based tests, ultra-cold neutrons (UCN) are ideal test particles, as with their vanishing electric charge and polarizability they avoid many problems plaguing other experiments. In the last decade, the qBounce collaboration has developed gravity resonance spectroscopy (GRS), a resonance method to test gravity at short distances. Using GRS at the PF2/UCN beam position, qBounce might test Dark Energy and Dark matter scenarios with a sensitivity of 5*10^-16 eV/day using our new Ramsey-type spectrometer.
Contact : tellier@ill.fr
Discipline évènement : (Physique)
Entité organisatrice : (ILL)
Nature évènement : (Séminaire)
Evènement répétitif : (General ILL Seminar - College 3)
Site de l'évènement : Polygone scientifique
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