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

Understand

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.