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arXiv 1407.3153math.PRmath-phmath.MP
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KPZ方程的爱因斯坦关系

The Einstein relation for the KPZ equation

Patricia Gonçalves, Milton Jara

摘要:

我们计算的KPZ方程在一维的非通用常数,在相关的微观动力学的物理量。特别地,我们推导了KPZ方程的输运系数$λ$的二阶爱因斯坦关系$λ= \frac{1}{2}\frac{d^2}{dρ^2} χ(ρ) D(ρ)$,根据守恒量$ρ$,扩散系数$D$和系统的静态压缩性$χ$。

英文摘要:

We compute the non-universal constants in the KPZ equation in one dimension, in terms of the thermodynamical quantities associated to the underlying microscopic dynamics. In particular, we derive the second-order Einstein relation $λ= \frac{1}{2}\frac{d^2}{dρ^2} χ(ρ) D(ρ)$ for the transport coefficient $λ$ of the KPZ equation, in terms of the conserved quantity $ρ$, the diffusion coefficient $D$ and the static compressibility of the system $χ$.

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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