Conveners
Afternoon 21
- Giovanni Cantatore
Dr
Harry Desmond
(University of Oxford)
04/06/2019, 17:10
Oral
Fifth forces generically follow from new dynamical fields, and hence are ubiquitous in extensions to the standard model. Broad classes of Lagrangian exhibit "screening mechanisms" which hide the fifth force in high-density environments such as the Milky Way, while keeping it operative on larger scales. I will describe the search for screened fifth forces on the scale of galaxies and their...
Marco Gorghetto
(SISSA)
04/06/2019, 17:30
Oral
If a PQ phase was ever restored after inflation the evolution of the QCD axion field would be dominated by topological defects, such as strings and domain walls. While in this case the relic abundance of axions is in principle completely calculable in terms of the axion mass, in practice no reliable analytic tool is available. I will first review the physics underlying the production and...
Manuel Meyer
(Stanford University)
04/06/2019, 17:50
Oral
The possible interaction of axionlike particles (ALPs) with photons would leave distinctive features in observations of gamma-ray sources. Such features include apparent oscillations in energy spectra, a reduction of the opacity of the Universe to gamma rays, as well as the possibility of a gamma-ray burst from core-collapse supernovae. In this talk I will review the latest results obtained...
Dr
Arne Wickenbrock
(Johannes Gutenberg-Universität)
04/06/2019, 18:10
Oral
The nature of dark matter, the invisible substance making up over 4/5 of the matter in the Universe, is one of the most fundamental mysteries of modern physics.
Ultralight bosons such as axions, axion-like particles or dark photons could make up most of the dark matter.
Couplings between such bosons and nuclear spins may enable their direct detection via nuclear magnetic resonance (NMR)...
