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首页> 外文期刊>Journal of Experimental and Theoretical Physics >Nonlinear intrinsic-nutation of high-density poiaritons in direct-gap semiconductors
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Nonlinear intrinsic-nutation of high-density poiaritons in direct-gap semiconductors

机译：直接间隙半导体中高密度极化子的非线性本征化

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We use the microscopic approach to study the evolution of a nonequilibrium polariton condensate and show that as a result of polariton-polariton scattering the condensate becomes considerably depleted in a very short time interval whose value is determined by the initial density of the condensate. Disintegration of the condensate has the form of nonlinear damped oscillations. We study the dynamics of the distribution function of extracondensate poiaritons and show that in the initial stage of the system's evolution the distribution function has the shape of a symmetric bell. With the passage of time oscillations appear in the envelope of the distribution function, and these are gradually transformed into shallow chaotic ripples. Formation of the short-wave wing of the distribution function is also observed. Attention is focused on the ignition, followed by partial extinction, of an additional sharp peak, which appears in a time interval characterized by low values of the density of the polariton condensate and slow variations of this density.
机译：我们使用微观方法研究了非平衡极化子冷凝物的演变，并显示了极化子-极化子散射的结果，冷凝物在很短的时间间隔内就被消耗considerably尽，其时间间隔由冷凝物的初始密度决定。冷凝物的分解具有非线性阻尼振荡的形式。我们研究了超冷凝点的分布函数的动力学，并表明在系统演化的初始阶段，分布函数具有对称钟形的形状。随着时间的流逝，振荡在分布函数的包络中出现，并且逐渐转变为浅层的混沌波纹。还观察到了短波机翼分布函数的形成。注意力集中在另一个尖峰的点火上，然后部分熄灭，该尖峰出现在一个时间间隔内，其特征是极化子冷凝物的密度值较低且该密度的变化缓慢。

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