Abstract We study the decay of large amplitude, almost periodic breather-like states in a deformed sine-Gordon model in one spatial dimension. We discover that these objects decay in a staggered fashion via a series of transitions, during which higher harmonics are released as short, staccato bursts of radiation. Further, we argue that this phenomenon is not restricted to one particular model, and that similar mechanisms of radiative decay of long-lived oscillating states can be observed for a wide class of physical systems, including the ϕ 6 model.

中文翻译：

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来自大振幅振荡衰减的断奏辐射

摘要 我们研究了一个空间维度上变形的正弦-戈登模型中大振幅、几乎周期性的呼吸器状状态的衰减。我们发现这些物体通过一系列跃迁以交错的方式衰变，在此期间，高次谐波以短促的断断续续的辐射爆发形式释放。此外，我们认为这种现象不限于一个特定的模型，并且可以在包括 ϕ 6 模型在内的多种物理系统中观察到类似的长寿命振荡状态的辐射衰减机制。