We propose a mechanism of preheating stage after inflation, using a new idea of parametrically amplified super-radiance. Highly coherent state, characterized by macro-coherence of scalar field coupled to produced massless particle in pairs, is created by parametric resonance effects associated with field oscillation around its potential minimum, within a Hubble volume. The state is described effectively by the simple Dicke-type of super-radiance model, and super-radiant pulse is emitted within a Hubble time, justifying neglect of cosmic expansion. Produced particles are shown to interact to change their energy and momentum distribution to realize thermal hot big bang universe. A long standing problem of heating after inflation may thus be solved. A new dark matter candidate produced at the emergence of thermalized universe is suggested as well.

中文翻译：

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参数放大的超光芒朝向炙手可热的大爆炸宇宙


我们提出了一种充气后预热阶段的机制，使用参数放大的超辐射的新想法。高度相干态，其特征是标量场的宏观相干性耦合成对产生的无质量粒子，是由哈勃体积内围绕其势最小值的场振荡相关的参数共振效应产生的。这种状态由简单的迪克型超辐射模型有效地描述，超级辐射脉冲在哈勃时间内发射，证明了忽视宇宙膨胀是合理的。产生的粒子相互作用以改变其能量和动量分布，以实现热热大爆炸宇宙。因此，可以解决一个长期存在的充气后加热问题。还提出了在热化宇宙出现时产生的一种新的暗物质候选者。