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arXiv 1502.03075quant-phgr-qc
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经典力学和量子力学守恒定律中的几何流

Geometric Flow appearing in Conservation Law in Classical and Quantum Mechanics

Naohisa Ogawa

摘要:

讨论了在嵌入$ε$的二维曲面中,经典粒子扩散中粒子数守恒定律和量子力学中概率守恒定律中几何流的出现.在这样一个具有小厚度$ε$的系统中,通常的二维守恒定律不成立,我们发现了一个反常现象。反常项是由$ε$展开得到的。我们发现,这一项具有高斯和平均曲率的依赖性,可以写为一些几何流的总发散。然后,我们有一个新的守恒定律,通过添加几何流到原来的。当我们把粒子限制在一个厚度很小的曲面上时,这一事实在经典扩散和量子力学中都成立。

英文摘要:

The appearance of a geometric flow in the conservation law of particle number in classical particle diffusion and in the conservation law of probability in quantum mechanics is discussed in the geometrical environment of a two-dimensional curved surface with thickness $ε$ embedded in $R_3$. In such a system with a small thickness $ε$, the usual two-dimensional conservation law does not hold and we find an anomaly. The anomalous term is obtained by the expansion of $ε$. We find that this term has a Gaussian and mean curvature dependence and can be written as the total divergence of some geometric flow. We then have a new conservation law by adding the geometric flow to the original one. This fact holds in both classical diffusion and quantum mechanics when we confine particles to a curved surface with a small thickness.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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