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摘要翻译：
用数值模拟方法研究了玻璃系统稳态剪切变形过程中的激活动力学。我们的结果表明，尽管反应坐标仅弱耦合于非平衡体系，但外界驱动力对势垒穿越速率有很强的影响。通过在Arrhenius表达式中引入一个有效温度，可以量化这种“驱动激活”，该有效温度接近于由涨落-耗散关系确定的有效温度。对一个简化模型系统的分析结果支持了这一结论。
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英文标题：
《Driven activation versus thermal activation》
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作者：
Patrick Ilg and Jean-Louis Barrat
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最新提交年份：
2007
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分类信息：
一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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一级分类：Physics 物理学
二级分类：Disordered Systems and Neural Networks 无序系统与神经网络
分类描述：Glasses and spin glasses; properties of random, aperiodic and quasiperiodic systems; transport in disordered media; localization; phenomena mediated by defects and disorder; neural networks
眼镜和旋转眼镜；随机、非周期和准周期系统的性质；无序介质中的传输；本地化；由缺陷和无序介导的现象；神经网络
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英文摘要：
Activated dynamics in a glassy system undergoing steady shear deformation is studied by numerical simulations. Our results show that the external driving force has a strong influence on the barrier crossing rate, even though the reaction coordinate is only weakly coupled to the nonequilibrium system. This "driven activation" can be quantified by introducing in the Arrhenius expression an effective temperature, which is close to the one determined from the fluctuation-dissipation relation. This conclusion is supported by analytical results for a simplified model system.
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PDF链接：
https://arxiv.org/pdf/704.0738
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