[W186] Pier Giuseppe Catinari: Hunting Axion Dark Matter with Antiferromagnets

[Latin American Webinars on Physics]

Dear colleagues, 

We are excited to invite you to our next webinar on Wednesday, October 1st, 15:00 UTC. Our guest will be Pier Giuseppe Catinari (Sapienza & INFN), who will discuss "Hunting Axion Dark Matter with Antiferromagnets." The abstract can be found below. 

Join us via YouTube: https://www.youtube.com/watch?v=vqQmqq_Qr58&list=PLukDK3oVeM6sePox260zF5v68wj4pdeqW 

Abstract:

In this talk, I will explore how effective field theories (EFTs) provide a powerful framework for describing interactions—particularly non-linear couplings—between dark matter particles and the collective excitations of target materials. I will focus specifically on the interaction between axion dark matter and magnons, which are quasiparticles arising from spin-wave excitations in antiferromagnetic materials. Materials such as nickel oxide emerge as optimal candidates for detecting sub-MeV dark matter with spin-dependent interactions, as well as for the absorption of QCD axions with masses in the meV range.

The talk will be based on
https://arxiv.org/abs/2411.11971 
https://arxiv.org/abs/2411.09761. 

https://lawphysics.wordpress.com/2025/09/28/w186-pier-giuseppe-catinari-hunting-axion-dark-matter-with-antiferromagnets/