8 papers
Metastable strings at PTAs: classical stability analysis
Simone Blasi, Maxime Grandjean, Alberto Mariotti
Metastable strings can arise from a two-step symmetry breaking chain of the type .They can decay through quantum tunneling by nucleating a monopole-antimonopo…
Domain walls in the scaling regime: Equal Time Correlator and Gravitational Waves
Simone Blasi, Alberto Mariotti, Aäron Rase +1
Domain walls are topological defects that may have formed in the early Universe through the spontaneous breakdown of discrete symmetries, and can be a strong source of gravitationa…
The Science of the Einstein Telescope
Adrian Abac, Raul Abramo, Simone Albanesi +485
Einstein Telescope (ET) is the European project for a gravitational-wave (GW) observatory of third-generation. In this paper we present a comprehensive discussion of its science ob…
Gravitational waves from cosmic strings in Froggatt-Nielsen flavour models
Simone Blasi, Lorenzo Calibbi, Alberto Mariotti +1
Gravitational waves (GW) are a powerful probe of the earliest moments in the Universe, enabling us to test fundamental interactions at energy scales beyond the reach of laboratory…
ALP leptogenesis
Martina Cataldi, Alberto Mariotti, Filippo Sala +1
We propose a novel realisation of leptogenesis that relies on the out-of-equilibrium decay of an axion-like particle (ALP) into right-handed Majorana neutrinos (RHNs) in the early…
DW-genesis: baryon number from domain wall network collapse
Alberto Mariotti, Xander Nagels, Aäron Rase +1
Axionic domain walls, as they move through the early universe plasma during their collapse, can generate a net baryon and lepton number through the mechanism of spontaneous baryoge…