摘要翻译：
研究了高频信号对含噪双稳态系统对低频亚阈值正弦信号响应的影响。我们表明，通过方便地选择高频信号的振幅与频率之比，可以在低频值处测量到大于1的随机共振增益。因此，HF信号的加入可导致微弱单色信号检测的改进。结果用一个有效的模型加以解释，并用数值模拟加以说明。
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英文标题：
《Stochastic resonance with weak monochromatic driving: gains above unity
  induced by high-frequency signals》
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作者：
Jes\'us Casado-Pascual (1), David Cubero (1), Jos\'e Pablo Baltan\'as
  (2) ((1) F\'isica Te\'orica, Universidad de Sevilla, Spain, (2) Departamento
  de F\'isica Aplicada II, Universidad de Sevilla, Spain)
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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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英文摘要：
  We study the effects of a high-frequency (HF) signal on the response of a noisy bistable system to a low-frequency subthreshold sinusoidal signal. We show that, by conveniently choosing the ratio of the amplitude of the HF signal to its frequency, stochastic resonance gains greater than unity can be measured at the low-frequency value. Thus, the addition of the HF signal can entail an improvement in the detection of weak monochromatic signals. The results are explained in terms of an effective model and illustrated by means of numerical simulations.
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PDF链接：
https://arxiv.org/pdf/705.0582