Cosmic superstrings, metastable strings and ultralight primordial black holes: from NANOGrav to LIGO and beyond
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2025)095
Abstract: While topologically stable cosmic strings are disfavoured by the recent observation of nHz stochastic gravitational waves (GW) by Pulsar Timing Arrays (PTA), e.g., NANOGrav, cosmic metastable strings and superstrings are not. However, because the gravitational… read more here.
Keywords: primordial black; gravitational waves; metastable strings; pta data ... See more keywords
Quantum tunneling in the early universe: stable magnetic monopoles from metastable cosmic strings
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2024/05/128
Abstract: We present a novel mechanism for producing topologically stable monopoles (TSMs) from the quantum mechanical decay of metastable cosmic strings in the early universe. In an SO(10) model this mechanism yields TSMs that carry two… read more here.
Keywords: cosmic strings; magnetic charge; metastable strings; metastable cosmic ... See more keywords