NANOGrav signal and LIGO-Virgo Primordial Black Holes from the Higgs field

TL;DR

This paper proposes that the NANOGrav gravitational wave signal and LIGO-Virgo black hole events can both originate from the Higgs field with a noncanonical kinetic term, producing detectable gravitational waves and primordial black holes.

Contribution

It introduces a model where the Higgs field generates scalar-induced gravitational waves and primordial black holes, linking two astrophysical phenomena.

Findings

NANOGrav signal can be explained by Higgs field dynamics.

Primordial black holes from the Higgs field match LIGO-Virgo black hole masses.

Generated gravitational waves are detectable by space-based observatories.

Abstract

We show that the NANOGrav signal can come from the Higgs field with a noncanonical kinetic term in terms of the scalar induced gravitational waves. The scalar induced gravitational waves generated in our model are also detectable by space-based gravitational wave observatories. Primordial black holes with stellar masses that can explain LIGO-Virgo events are also produced. Therefore, the NANOGrav signal and the BHs in LIGO-Virgo events may both originate from the Higgs field.