![Time evolution of the probability distribution of the system for different temperatures as labeled and for fixed parameters: V=106 km3 , L=10 53 erg/s, r=0.01 AU, Grac=26.30 kJ/mol. The vertical axis is enantiomeric excess, and the horizontal axis is time in Myr scale. -- [astro-ph.HE]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Supernova-Neutrinos.png?fit=1200%2C677&ssl=1)
[astro-ph.HE] We investigate the role of parity-violating interactions between supernova neutrinos and chiral molecules in nearby interstellar molecular clouds as a potential source of biomolecular homochirality.
We introduce neutrino interactions into the autocatalytic chemical reactions in a far-from-equilibrium noise-induced system. These interactions create a directional bias between L and D enantiomers in the racemization reactions, which is amplified by autocatalysis and stochastic fluctuations.
Chemical scheme of the system, Eqs. (5) – (9), considering enantiomer-neutrino interactions. The green arrows represent the autocatalytic reactions, the red arrows represent the non-autocatalytic decays and their backward reactions, and finally, the yellow arrow represents the neutrinoenantiomer reaction. — [astro-ph.HE]
We solve the stochastic equations within the Ito sense to obtain the dynamics of the probability distribution of the enantiomeric excesses, offering an astrophysical scenario for the delivery of homochirality seeds to Earth by meteorites.
In spite of the weak interactions of supernova neutrinos, our framework introduces an amplification mechanism to yield a considerable enantiomeric excess of more than 10%, in agreement with the latest chemical analysis of the meteorites.
Moreover, we scan over the parameter space of the model, inferring from the observational values in order to explore the window of opportunity to generate the initial seeds of homochiral states in interstellar molecular clouds.
Amirmasoud Jannat, Soroush Shakeri, Farhad Shahbazi
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE); Statistical Mechanics (cond-mat.stat-mech); High Energy Physics – Phenomenology (hep-ph); Biological Physics (physics.bio-ph)
Cite as: arXiv:2607.12813 [astro-ph.HE] (or arXiv:2607.12813v1 [astro-ph.HE] for this version)
https://doi.org/10.48550/arXiv.2607.12813
Focus to learn more
Submission history
From: Soroush Shakeri
[v1] Tue, 14 Jul 2026 14:26:35 UTC (683 KB)
https://arxiv.org/abs/2607.12813
Astrobiology, Astrochemistry, Biochemistry,
