7 papers
Axion Inflation with a Massive Abelian Gauge Field
Ricardo Z. Ferreira, Alessio Notari, José Jaime Terente DÃaz
The paper studies how an axial coupling between an inflaton (axion) and a massive Abelian gauge field can cause tachyonic amplification of one helicity, analyzes the resulting back…
Biased Domain Wall Networks and their Gravitational Waves
Davide Barbini, Alessio Notari, Oriol Pujolàs +2
Cosmic Domain Wall networks are among the most interesting sources of a stochastic Gravitational Wave (GW) background from the early Universe. We present a thorough analysis of the…
Thermal Masses and Bubble-Wall Friction in Cosmological Phase Transitions
Carlo Branchina, Stefania De Curtis, Luigi Delle Rose +3
The paper investigates how thermal masses affect the friction on bubble walls during first-order cosmological phase transitions, showing that they suppress infrared gauge‑boson con…
Towards a complete theory of thermal leptogenesis in the SM and MSSM
G. F. Giudice, A. Notari, M. Raidal +2
We perform a thorough study of thermal leptogenesis adding finite temperature effects, RGE corrections, scatterings involving gauge bosons and by properly avoiding overcounting on-…
Mimicking Phantom Dark Energy with Evolving Dark Matter Mass
Lorenzo La Penna, Alessio Notari, Michele Redi
We present a general method to reproduce a given cosmological background through energy exchange between dark energy (DE) and dark matter (DM). This can be simply realized with a s…
The Spectrum of Gravitational Waves from Annihilating Domain Walls
Alessio Notari, Fabrizio Rompineve, Francisco Torrenti
Networks of cosmic domain walls can form in the early Universe as a consequence of the spontaneous breaking of discrete symmetries. We study the production of a cosmological backgr…