Radiation from global topological strings using adaptive mesh refinement: Massive modes

@article{Drew2022RadiationFG,
title={Radiation from global topological strings using adaptive mesh refinement: Massive modes},
author={Amelia Drew and E. P. S. Shellard},
journal={Physical Review D},
year={2022}
}
• Published 18 November 2022
• Physics
• Physical Review D
We implement adaptive mesh refinement (AMR) simulations of global topological strings using the public code, GRChombo. We perform a quantitative investigation of massive radiation from single sinusoidally displaced string configurations, studying a range of string widths defined by the coupling parameter $\lambda$ over two orders of magnitude, effectively varying the mass of radiated particles $m_H \sim \sqrt{\lambda}$. We perform an in-depth investigation into the effects of AMR on massive…

References

SHOWING 1-10 OF 34 REFERENCES

• Computer Science, Physics
Classical and Quantum Gravity
• 2022
We demonstrate the flexibility and utility of the Berger–Rigoutsos adaptive mesh refinement (AMR) algorithm used in the open-source numerical relativity (NR) code GRChombo for generating
• Physics
Nature Communications
• 2022
Axions are hypothetical particles that may explain the observed dark matter density and the non-observation of a neutron electric dipole moment. An increasing number of axion laboratory searches are
• Physics
Physical Review D
• 2019
We present the first fully general relativistic dynamical simulations of Abelian-Higgs cosmic strings using 3+1D numerical relativity. Focusing on cosmic string loops, we show that they collapse due
• Physics
Physical review. D, Particles and fields
• 1996
It is established that the `local backreaction approximation' provides a satisfactory quantitative description of radiative damping for a wide variety of string configurations.
• Physics
Physical Review D
• 2020
We numerically study the decay of cosmic global string loops due to radiation of Goldstone bosons and massive scalar ($\chi$) particles. The length of loops we study range from 200-1000 times the
• Physics
Physical Review D
• 2022
We study the generation and propagation of gravitational waves in scalar-tensor gravity using numerical relativity simulations of scalar ﬁeld collapses beyond spherical symmetry. This allows us to
• Physics
Classical and Quantum Gravity
• 2020
We construct, for the first time, the time-domain gravitational wave strain waveform from the collapse of a strongly gravitating Abelian Higgs cosmic string loop in full general relativity. We show
• Physics
• 2022
Nielsen-Olesen vortices in the Abelian-Higgs (AH) model are the simplest realisations of cosmic strings in a gauge field theory. Large-scale numerical solutions show that the dominant decay channel
• Physics
• 2021
Particle emission, in addition to gravitational radiation from cosmic string loops, affects the resulting loop distribution and hence the corresponding observational consequences of cosmic strings.
• Physics
• 2001
We study the evolution of Abelian-Higgs string networks in large-scale numerical simulations in both a static and expanding background. We measure the properties of the network by tracing the motion