4 papers
The spectrum of axions in a scaling string network
José Correia, Mark Hindmarsh, Joanes Lizarraga +3
Cosmic strings formed when the Peccei-Quinn symmetry breaks post-inflation are expected to emit axions throughout their lifetime. The details of the evolution of this network and t…
Numerical simulations of magnetic monopole evolution in an expanding universe
Mark Hindmarsh, Asier Lopez-Eiguren, Riikka Seppä +1
Magnetic monopoles are an inevitable feature of post-inflation symmetry-breaking phase transitions in grand unified theories. Analytic estimates of their density indicate that they…
Hubble-Induced Phase Transitions: Gravitational-Wave Imprint of Ricci Reheating from Lattice Simulations
Dario Bettoni, Giorgio Laverda, Asier Lopez-Eiguren +1
Gravitational waves offer an unprecedented opportunity to look into the violent high-energy processes happening during the reheating phase of our Universe. We consider a Hubble-ind…
Scaling density of axion strings in terasite simulations
José Correia, Mark Hindmarsh, Joanes Lizarraga +3
We report on a study of axion string networks using fixed-grid simulations of up to points per side. The length of string can be characterised in terms of standard dimensio…