Complexity of waves in nonlinear disordered media
Complexity of waves in nonlinear disordered media
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DOI：
10.1103/physrevb.83.134204
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发表时间：
2011-04-18
影响因子：
3.7
通讯作者：
Leuzzi, L.
中科院分区：
文献类型：
--
作者：
Conti, C.;Leuzzi, L.
本文用无序耦合的哈密顿模型研究了随机系统中非线性耦合的多个模的相位统计特性。的政权，其中的模式有一个固定的分布，它们的能量和相位耦合的随机性和能量的任意程度进行了研究。计算了复杂度随温度和非线性强度的变化。根据存储的能量和无序量导出相图。随机激光，非线性波传播，有限温度玻色-爱因斯坦凝聚的影响进行了讨论。
The statistical properties of the phases of several modes nonlinearly coupled in a random system are investigated by means of a Hamiltonian model with disordered couplings. The regime in which the modes have a stationary distribution of their energies and in which the phases are coupled is studied for arbitrary degrees of randomness and energy. The complexity versus temperature and strength of nonlinearity is calculated. A phase diagram is derived in terms of the stored energy and amount of disorder. Implications in random lasing, nonlinear wave propagation, and finite-temperature Bose-Einstein condensation are discussed.