Decoherence of a Quantum Nonlinear Oscillator Under a Non-zero Temperature Thermal Bath

为量的 decoherence 过程的典型时间τ _ D 在非零温度下面的非线性的振荡器系统热洗澡被扩展线性熵学习。由数字分析，在非零温度，量连贯比在零温度快很腐烂，这被显示出。而且，热洗澡将把关键抑制带到 observables 的量效果的非零温度，它引起这些量完成变得不能坚持直到 Ehrenfest 时间，但是是不够的破坏 thequantum 古典的转变。

The characteristic time τD for decoherence process of a quantum nonlinear oscillator system under a nonzero temperature thermal bath is studied by expanding the linear entropy. By numerical analysis, it is shown that at a non-zero temperature, the quantum coherence decays much faster than at zero temperature. Moreover, the non-zero temperature thermal bath will bring a crucial suppression to the quantum effects of the observables, which causes these quantum effects to become unable to persist up to the Ehrenfest time but is insufticient to destroy the quantum-classical transition.