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Quantum to Classical Transition by a Classically Small Interaction

Quantum to Classical Transition by a Classically Small Interaction
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摘要 We investigate the quantum-classical transition of a kicked rotor (KR) under perturbation by a second one. The influence of such a chaotic KR makes decoherence of the first one, resulting in the emergence of classical diffusion from its quantum dynamics. Such quantum-classical transition persists by decreasing the effective Planck's constant h, and at the same time, decreasing the mass of the second KR and the interaction strength proportionally. In the limit of h → 0, due to vanishing small mass and interaction, the second KR has almost no effect on the classieal dynamics of the first one. We demonstrate this via two different coupling potentials.
出处 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第8期247-252,共6页 理论物理通讯(英文版)
基金 Supported by National Science Foundation of China under Grant No.10875087
关键词 DECOHERENCE ENTANGLEMENT quantum chaos kicked rotor 古典 量子动力学 昆腾 普朗克常数 相互作用 消相干 质量 时间
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