反应A+A 0中的虚噪声与宇称守恒<-->
Imaginary noise and parity conservation in the reaction A+A <--> 0
摘要：
在Poisson表示下考虑可逆反应A+ A0的主方程<-->，它等价于复随机变量λ的带虚噪声的Langevin方程.这种朗之万方程在反应扩散问题的场论处理中相当普遍。对于这个例子，我们研究的概率流在复杂的平面分析和模拟。我们表明，这种流动有各种奇怪的功能，必须预期类似于发生在其他朗之万方程与反应扩散问题。
英文摘要：
The master equation for the reversible reaction A+A <--> 0 is considered in Poisson representation, where it is equivalent to a Langevin equation with imaginary noise for a complex stochastic variable ϕ. Such Langevin equations appear quite generally in field-theoretic treatments of reaction-diffusion problems. For this example we study the probability flow in the complex ϕplane both analytically and by simulation. We show that this flow has various curious features that must be expected to occur similarly in other Langevin equations associated with reaction-diffusion problems.
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