30 Jan 2025
Seminars and colloquia
Time
-
Venue
Beecroft Seminar Room
Beecroft Building, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU
Beecroft Building, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU
Speaker(s)
Dr Francesca Chadha-Day, Durham University
Seminar series
Theoretical particle physics seminar
For more information contact
John Wheater (john.wheater@physics.ox.ac.uk)
Abstract
String theory models generically predict the existence of multiple axion-like particle (ALP) fields, which can act as both dark matter and dark energy as well as solving the strong CP problem. I will motivate and discuss the phenomenology of systems with multiple ALPs which can undergo oscillations akin to neutrino oscillations. I will explore this phenomenology in some of the leading ALP search strategies, including the CERN Axion Solar Telescope and the gamma-ray spectra of distant blazars. We find that multi-ALP models can predict drastically different results than single ALP models.