نقض پاريته و ديناميك غيرتعادلي در ظهور دستيدگي حيات

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 It 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.

سروش شاكري , حسين فرخ پور

فرهاد شهبازي دستجرده

احمد شيرزاد , كيوان آقابابائي ساماني