Primordial Neutrinos and New Physics: Novel Approach to Solving the Neutrino Boltzmann Equation.

Authors

Maksym Ovchynnikov, Vsevolod Syvolap

Published in

Physical review letters. Volume 134. Issue 10. Pages 101003. Mar 14, 2025.

Abstract

Understanding how new physics influences the dynamics of cosmic neutrinos during their decoupling is crucial in light of upcoming precise cosmological observations and the need to reconcile cosmological and laboratory probes. Existing approaches to solving the neutrino Boltzmann equation are often model dependent, computationally inefficient, and yield contradictory results. To solve this problem, we introduce a novel method to comprehensively study neutrino dynamics. We apply this method to several case studies, resolving the discrepancy in the literature about the impact of nonthermal neutrinos on N_{eff} and providing important insights about the role of decaying new physics particles on MeV plasma.

PMID:
40153625
Bibliographic data and abstract were imported from PubMed on 29 Mar 2025.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.