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arXiv 1003.3459hep-thastro-ph.COhep-ph
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振子的量子辐射

Quantum Radiation of Oscillons

Mark P. Hertzberg

摘要:

许多经典的标量场都有非凡的解:相干振荡的定域团块,称为量子。在许多情况下,经典小振幅光子的衰减率被指数抑制,因此它们的寿命非常长。在这项工作中,我们计算量子化的光子的衰变率。我们发现它是一个幂律的振幅和耦合的理论。因此,量子衰变率与经典衰变率非常不同,并且通常占主导地位。我们表明,基本上所有的介子最终衰变产生出射辐射。在单场论中,出射的辐射通常是线性增长的,而如果玻色子与其他玻色子耦合,出射的辐射可以是指数增长的。后者是参数共振的一种形式:爆炸性能量从局域团转移到子场。这可能导致早期宇宙中有趣的现象学。我们的结果是从微扰分析,非微扰Floquet分析,和数值。

英文摘要:

Many classical scalar field theories possess remarkable solutions: coherently oscillating, localized clumps, known as oscillons. In many cases, the decay rate of classical small amplitude oscillons is known to be exponentially suppressed and so they are extremely long lived. In this work we compute the decay rate of quantized oscillons. We find it to be a power law in the amplitude and couplings of the theory. Therefore, the quantum decay rate is very different to the classical decay rate and is often dominant. We show that essentially all oscillons eventually decay by producing outgoing radiation. In single field theories the outgoing radiation has typically linear growth, while if the oscillon is coupled to other bosons the outgoing radiation can have exponential growth. The latter is a form of parametric resonance: explosive energy transfer from a localized clump into daughter fields. This may lead to interesting phenomenology in the early universe. Our results are obtained from a perturbative analysis, a non-perturbative Floquet analysis, and numerics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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