Paper Image

Leptogenesis effects on gravitational waves matching pulsar timing arrays

Published on:

10 January 2024

Primary Category:

General Relativity and Quantum Cosmology

Paper Authors:

K. El Bourakadi,

H. Chakir,

M. Yu. Khlopov

Bullets

Key Details

Leptogenesis from B-L symmetry breaking affects gravitational wave production

Predicted gravitational waves match NANOGrav pulsar timing array observations

Requires B-L symmetry breaking near GUT scale to match measurements

Primordial black hole binaries emit gravitational waves

Specific primordial black hole masses could explain JWST massive high-redshift galaxies

AI generated summary

Leptogenesis effects on gravitational waves matching pulsar timing arrays

This paper demonstrates that leptogenesis mechanisms associated with B-L symmetry breaking notably impact gravitational wave production. The predicted gravitational waves align with recent NANOGrav pulsar timing array observations of a stochastic background. Matching measurements requires B-L breaking near the GUT scale. We also consider primordial gravitational waves from early binary black holes, which could explain massive high-redshift galaxies seen by JWST. There may be a shared source between NANOGrav and JWST observations - primordial black holes seeding early galaxy formation.

Answers from this paper

Comments

No comments yet, be the first to start the conversation...

Sign up to comment on this paper

Sign Up