Probing Symmetron Fields with Bouncing Neutrons
Mardi 6 février 2018 11:00
- Duree : 1 heure
Lieu : Seminar Room 7/8 - ILL 1, 71 avenue des Martyrs, Grenoble
Orateur : Mario PITSCHMANN (TU Wien, Atominstitut, Nuclear Physics, Operngasse 9, A-1040 Wien, Austria)
The smallness of the cosmological constant is troubling from a theoretical point of view and led to the introduction of hypothetical new scalar fields. Since such fields have escaped all experimental tests so far, one may assume that some kind of screening mechanism is at work. A natural screening mechanism based on spontaneous symmetry breaking is realized by symmetron fields. Such a hypothetical field would change the energy of quantum states of ultra-cold neutrons bound in the gravitational potential of the earth. This allows to search for symmetrons for a large region of their parameters.
Contact : tellier@ill.fr
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