Conveners
Fifth Force and Variation of Fundamental Constants
- Angelo Esposito (Sapienza)
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Dr Mikhail Osipenko (GE)12/02/2025, 09:30
Nuclear transitions have energy scale a few orders of magnitude larger than atomic ones. This mismatch of energy scales prevented to use laser sources for excitation of nuclear levels. In the 70th it was deduced that 229Th isotope might have an isomeric state at the energy of a few eVs. Recently, with development of the optical frequency combs, this state stimulated a broad interest, in...
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Pasquale Maddaloni (Istituto Nazionale di Fisica Nucleare)12/02/2025, 10:10
Based on the production of molecular samples at cryogenic temperatures by the buffer-gas-cooling technique and their combination with cavity-enhanced spectroscopy in the Lamb-dip regime, we present a new generation of high-accuracy physics tests beyond the Standard Model at the eV energy scale. Examples include searching for putative fifth-force interactions and assessing the space-time...
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Philip Soerensen (Istituto Nazionale di Fisica Nucleare)12/02/2025, 11:30
Various types of BSM physics, in particular new light particles, can lead to long-range forces. We can search for such "fifth force" interactions by sensitivity measuring gravity on various scales. In this talk, I will review how such long-range forces can be generated and how they lead to apparent violations of the inverse-square law and the equivalence principle of gravity. I will also...
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Philip Soerensen (Istituto Nazionale di Fisica Nucleare), Angelo Esposito (Sapienza)12/02/2025, 12:10