From NANOGrav to LIGO with metastable cosmic strings

By W. Buchmuller, V. Domcke, Kai Schmitz. Physics Letters B, 2020

145 citations recorded by the source corpus.

Abstract We interpret the recent NANOGrav results in terms of a stochastic gravitational wave background from metastable cosmic strings. The observed amplitude of a stochastic signal can be translated into a range for the cosmic string tension and the mass of magnetic monopoles arising in theories of grand unification. In a sizable part of the parameter space, this interpretation predicts a large stochastic gravitational wave signal in the frequency band of ground-based interferometers, which can be probed in the very near future. We confront these results with predictions from successful inflation, leptogenesis and dark matter from the spontaneous breaking of a gauged B−L symmetry.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/288d606266620a141386519521274b39a66b7b53

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In Astronomy and Astrophysics

1. Daniel G. Figueroa
2. V. Domcke
3. G. White
4. Marco Peloso
5. F. Muia
6. F. Quevedo
7. M. Hindmarsh
8. A. Ricciardone

Citations in the corpus

• Challenges and opportunities of gravitational-wave searches at MHz to GHz frequencies (2020, background): “In this case, the low-frequency end of the spectrum, corresponding to GW emission at later times, will be suppressed and the signal may only be detectable in the high-frequency range (Leblond et al. 2009; Dror et al. 2020; Buchmuller et al. 2020a, b).”