超新星中微子与生物分子同手性起源
Supernova Neutrinos and the Origin of Biomolecular Homochirality
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中文总结 AI 辅助
研究超新星中微子与星际分子云中手性分子的宇称破缺作用，通过引入中微子相互作用到自催化反应，求解随机方程，提供陨石送同手性种子到地球的场景，能产生可观对映体过量并探索参数空间。
中文摘要 AI 辅助
我们研究了超新星中微子与附近星际分子云中手性分子之间的宇称破缺相互作用，作为生物分子同手性的潜在来源。我们将中微子相互作用引入到远离平衡的噪声诱导系统中的自催化化学反应中。这些相互作用在消旋反应中产生左旋和右旋对映体之间的方向偏差，通过自催化和随机涨落放大。我们在伊藤意义下求解随机方程，以获得对映体过量概率分布的动力学，为陨石将同手性种子输送到地球提供了一个天体物理场景。尽管超新星中微子相互作用微弱，但我们的框架引入了一种放大机制，产生超过10%的可观对映体过量，与陨石的最新化学分析一致。此外，我们扫描模型的参数空间，从观测值推断，以探索在星际分子云中产生同手性状态初始种子的机会窗口。
英文摘要
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. 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.
