5 papers
Loop decay in Abelian-Higgs string networks
Mark Hindmarsh, Joanes Lizarraga, Ander Urio +1
We study the decay of cosmic string loops in the Abelian-Higgs model. We confirm earlier results that loops formed by intersections of infinite strings formed from random-field ini…
Approach to scaling in axion string networks
Mark Hindmarsh, Joanes Lizarraga, Asier Lopez-Eiguren +1
We study the approach to scaling in axion string networks in the radiation era, through measuring the root-mean-square velocity as well as the scaled mean string separation …
Irreducible background of gravitational waves from a cosmic defect network: update and comparison of numerical techniques
Daniel G. Figueroa, Mark Hindmarsh, Joanes Lizarraga +1
Cosmological phase transitions in the early Universe may produce relics in the form of a network of cosmic defects. Independently of the order of a phase transition, topology of th…
The scaling density of axion strings
Mark Hindmarsh, Joanes Lizarraga, Asier Lopez-Eiguren +1
In the QCD axion dark matter scenario with post-inflationary Peccei-Quinn symmetry breaking, the number density of axions, and hence the dark matter density, depends on the length…
Type I Abelian Higgs strings: evolution and Cosmic Microwave Background constraints
Mark Hindmarsh, Joanes Lizarraga, Jon Urrestilla +2
We present results from the first simulations of networks of Type I Abelian Higgs cosmic strings to include both matter and radiation eras and Cosmic Microwave Background (CMB) con…