Ionization phenomena have been widely studied for decades. With the advent of cavity technology, the question arises how quantum light affects molecular ionization. As the ionization spectrum is recorded from the neutral ground state, it is usually possible to choose cavities which exert negligible effect on the neutral ground state, but have significant impact on the ion and the ionization spectrum. Particularly interesting are cases where the ion exhibits conical intersections between close-lying electronic states, which gives rise to substantial nonadiabatic effects. Assuming single-molecule strong coupling, we demonstrate that vibrational modes irrelevant in the absence of a cavity play a decisive role when the molecule is in the cavity. Here, dynamical symmetry breaking is responsible for the ion-cavity coupling and high symmetry enables control of the coupling via molecular orientation relative to the cavity field polarization. Significant impact on the spectrum by the cavity is found and shown to even substantially increase for less symmetric molecules.

中文翻译：

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空腔对分子电离谱的影响

电离现象已被广泛研究了数十年。随着空腔技术的出现，出现了量子光如何影响分子电离的问题。由于电离谱是从中性基态记录的，通常可以选择对中性基态影响可忽略不计，但对离子和电离谱有显着影响的腔。特别有趣的是离子在紧密电子态之间表现出圆锥形交叉的情况，这会产生显着的非绝热效应。假设单分子强耦合，我们证明，当分子在空腔中时，在没有空腔的情况下不相关的振动模式起着决定性的作用。在这里，动态对称性破缺是离子腔耦合的原因，高对称性使得能够通过相对于腔场极化的分子取向来控制耦合。发现空腔对光谱的显着影响，并且表明对于不太对称的分子甚至会大幅增加。