Induced Gravitational Waves as Cosmic Tracers of Leptogenesis

2025/04/28 by Marco Chianese, Guillem Domènech, Chianese, Marco +7 · 4 citations
Physics and Astronomy · #Pulsars and Gravitational Waves Research #Cosmology and Gravitation Theories #Statistical Mechanics and Entropy

paper · pdf · doi:10.48550/arxiv.2504.20135

Abstract

We demonstrate that induced gravitational waves (IGWs) can naturally emerge within the framework of thermal leptogenesis models, thereby providing a robust probe for exploring this theory at remarkably high energy scales. To illustrate this principle, we put forth a basic leptogenesis model in which an early matter-dominated phase, tracing the leptogenesis scale, enhances the generation of gravitational waves induced by an early structure formation. Leveraging recent N-body and lattice simulation results for IGW computations in the non-linear regime, we show that it is possible to establish a direct link between the frequency and amplitude of these IGWs and the thermal leptogenesis scale.

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Cited by

• Probing thermal leptogenesis and dark matter through primordial gravitational waves from a supercooled universe
• Testing Seesaw and Leptogenesis via Gravitational Waves: Majorana versus Dirac
• Impact of Non-Thermal Leptogenesis with Early Matter Domination on Gravitational Waves from First-order Phase Transition
• Observing Leptogenesis in Action with Gravitational Waves

Related

• Probing Leptogenesis through Gravitational Waves
• Observing Leptogenesis in Action with Gravitational Waves
• Leptogenesis Effects on the Gravitational Waves Background: Interpreting the NANOGrav Measurements and JWST Constraints on Primordial Black Holes
• Impact of Non-Thermal Leptogenesis with Early Matter Domination on Gravitational Waves from First-order Phase Transition
• Probing Leptogenesis at LISA: A Fisher analysis