We explore with self-consistent 2D Fornax simulations the dependence of the outcome of collapse on many-body corrections to neutrino-nucleon cross sections, the nucleon-nucleon bremsstrahlung rate, electron capture on heavy nuclei, pre-collapse seed perturbations, and inelastic neutrino-electron and neutrino-nucleon scattering. Importantly, proximity to criticality amplifies the role of even small changes in the neutrino-matter couplings, and such changes can together add to produce outsized effects. When close to the critical condition the cumulative result of a few small effects (including seeds) that individually have only modest consequence can convert an anemic into a robust explosion, or even a dud into a blast. Such sensitivity is not seen in one dimension and may explain the apparent heterogeneity in the outcomes of detailed simulations performed internationally. A natural conclusion is that the different groups collectively are closer to a realistic understanding of the mechanism of core-collapse supernovae than might have seemed apparent.

中文翻译：

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核心坍缩超新星机制的关键物理依赖性

我们使用自洽的 2D Fornax 模拟探索坍缩结果对中微子-核子截面的多体校正、核子-核子轫致辐射率、重核上的电子捕获、坍缩前种子扰动和非弹性中微子的依赖性-电子和中微子核子散射。重要的是，接近临界点会放大中微子-物质耦合中即使很小的变化的作用，并且这些变化可以加在一起产生巨大的影响。当接近临界条件时，一些小效应（包括种子）的累积结果（包括种子）单独具有适度的后果，可以将贫血转化为强烈的爆炸，甚至将无用的转化为爆炸。这种敏感性在一维中看不到，可以解释国际上进行的详细模拟结果的明显异质性。一个自然的结论是，不同的群体集体更接近于对核心坍缩超新星机制的现实理解，而不是看起来很明显。