8 papers
Gravitational waves from strong first order phase transitions
José Correia, Mark Hindmarsh, Kari Rummukainen +1
We study gravitational wave production at strong first order phase transitions, with large-scale, long-running simulations of a system with a scalar order parameter and a relativis…
Challenges and Opportunities of Gravitational Wave Searches above 10 kHz
Nancy Aggarwal, Odylio D. Aguiar, Diego Blas +34
The first direct measurement of gravitational waves by the LIGO and Virgo collaborations has opened up new avenues to explore our Universe. This white paper outlines the challenges…
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…
Recovering a phase transition signal in simulated LISA data with a modulated galactic foreground
Mark Hindmarsh, Deanna C. Hooper, Tiina Minkkinen +1
Stochastic backgrounds of gravitational waves from primordial first-order phase transitions are a key probe of physics beyond the Standard Model. They represent one of the best pro…
Acoustic gravitational waves beyond leading order in bubble over Hubble radius
Lorenzo Giombi, Jani Dahl, Mark Hindmarsh
We calculate the gravitational wave power spectrum from sound waves in a cosmological first order phase transition in the unexplored regime of large bubbles, by which we mean that…