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arXiv 0704.3877hep-th
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随机量子化的相对论扩散方程

Relativistic diffusion equation from stochastic quantization

P. O. Kazinski

摘要:

提出了新的随机量化方案。这个量子化过程等价于用虚变形参数(普朗克常量)以变形量子化的方式对观测量代数进行变形。我们将这种方法应用于非相对论和相对论粒子与电磁场相互作用的模型。在第一种情况下,我们建立了这样的量子化的福克-普朗克方程与一个特殊的力的等价性。将量子化过程应用于相对论性粒子模型,可以得到坐标空间中福克-普朗克方程的相对论性推广,在没有电磁场的情况下,它可以简化为相对论性扩散(热)方程。导出了在势垒下扩散的随机量子化粒子和谐振子势场中粒子的定态几率分布函数。

英文摘要:

The new scheme of stochastic quantization is proposed. This quantization procedure is equivalent to the deformation of an algebra of observables in the manner of deformation quantization with an imaginary deformation parameter (the Planck constant). We apply this method to the models of nonrelativistic and relativistic particles interacting with an electromagnetic field. In the first case we establish the equivalence of such a quantization to the Fokker-Planck equation with a special force. The application of the proposed quantization procedure to the model of a relativistic particle results in a relativistic generalization of the Fokker-Planck equation in the coordinate space, which in the absence of the electromagnetic field reduces to the relativistic diffusion (heat) equation. The stationary probability distribution functions for a stochastically quantized particle diffusing under a barrier and a particle in the potential of a harmonic oscillator are derived.

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