arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1808.07933cond-mat.stat-mech
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自旋标度函数的热力学计算

Thermodynamic calculation of spin scaling functions

George Ruppeiner

摘要:

临界现象理论的中心是每个自旋的标度热力学势$ϕ(β, h)=|t|^{p}Y(h|t|^{-q})$,逆温度$β=1/T$,$h=-βH$,有序场$H$,约化温度$t=t(β)$,临界指数$p$和$q$,以及$z=h|t|^{-q}$的函数$Y(z)$。讨论了用热力学信息几何计算$Y(z)$。用三个容许函数$t(β)$得到比例解:1)$t=e^{-Jβ}$,2)$t=β^{-1}$,和3)$t=β_C-β$,其中$J$和$β_C$是常数。对于$p=q$,信息几何产生$Y(z)=\sqrt{1+z^2}$,与一维(1D)铁磁伊辛模型一致。

英文摘要:

Critical phenomena theory centers on the scaled thermodynamic potential per spin $ϕ(β, h)=|t|^{p}Y(h|t|^{-q})$, with inverse temperature $β=1/T$, $h=-βH$, ordering field $H$, reduced temperature $t=t(β)$, critical exponents $p$ and $q$, and function $Y(z)$ of $z=h|t|^{-q}$. I discuss calculating $Y(z)$ with the information geometry of thermodynamics. Scaled solutions obtain with three admissible functions $t(β)$: 1) $t=e^{-Jβ}$, 2) $t=β^{-1}$, and 3) $t=β_C-β$, where $J$ and $β_C$ are constants. For $p=q$, information geometry yields $Y(z)=\sqrt{1+z^2}$, consistent with the one-dimensional (1D) ferromagnetic Ising model.

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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