APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Edoardo Vitagliano (UCLA)
Title: Axion-like particle dark matter and gravitational waves from topological defects
Date (JST): Wed, Oct 06, 2021, 10:00 - 11:00
Place: Zoom
Related File: 2728.pdf
Abstract: Axion-like particles (ALPs) are a compelling candidate for dark matter (DM). Their production is associated with the formation of a string-wall network. This system must annihilate, producing gravitational waves and non-relativistic ALPs. In my talk I will show that these gravitational waves, if produced at temperatures below 100 eV, could be detected by future cosmological probes for ALPs with mass from 10−16 to 106 eV, opening a window on ALP DM with arbitrary small couplings to the Standard Model.