Conveners
Defects1
- Lara Sousa (Instituto de Astrofísica e Ciências do Espaço/ U. Porto)
Particle physics scenarios with discrete symmetries can be probed by searching for their cosmological relics. When the symmetry is spontaneously broken in the early Universe, a network of topological defects (domain walls) is formed, that generically ends up making a large fraction of the energy budget of the Universe. While these defects are required to decay away before dominating, they are...
We present the audible axion mechanism extended by a period of supercooling that delays the onset of axion oscillations. While the original setup relies on a large axion decay constant and coupling to a dark Abelian gauge field to produce sizable gravitational wave signals, in this talk we discuss how supercooling opens up the testable parameter space and reduces the required coupling to...
