Internal chaos in an open quantum system: From Ericson to conductance fluctuations
Internal chaos in an open quantum system: From Ericson to conductance fluctuations
复制标题
开放量子系统中的内部混沌：从埃里克森到电导涨落
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
G. Berman
中科院分区：
文献类型：
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作者：
S. Sorathia;F. Izrailev;G. Celardo;V. Zelevinsky;G. Berman
利用开放费米系统模型研究了内禀混沌和不可逆衰变到开放连续通道的相互作用。该模型有两种形式，一种是由无序引起的单体混沌，另一种是由粒子间相互作用引起的多体混沌。连续耦合由有效非厄米哈密顿量描述。我们的主要兴趣是在依赖于耦合强度和内部混沌程度的各种通道的横截面的特定相关性。这些结果是通用的，并涉及到各种介观物体的共同特征，包括电导波动和共振核反应。
The model of an open Fermi system is used for studying the interplay of intrinsic chaos and irreversible decay into open continuum channels. Two versions of the model are characterized by one-body chaos coming from disorder or by many-body chaos due to the inter-particle interactions. The continuum coupling is described by the effective non-Hermitian Hamiltonian. Our main interest is in specific correlations of cross-sections for various channels in dependence on the coupling strength and degree of internal chaos. The results are generic and refer to common features of various mesoscopic objects including conductance fluctuations and resonance nuclear reactions.