V2EX potts model

Potts Model

定义 Definition

Potts模型:统计物理中的一种格点模型,用来描述系统中每个格点可取 q 种离散状态(自旋/类别),相邻格点倾向于取相同状态时会降低能量。它是 Ising模型(q=2) 的推广,常用于研究相变、临界现象;在计算机视觉与概率图模型中也常作为平滑/一致性先验(鼓励相邻像素同类)。

发音 Pronunciation (IPA)

/pts mdl/ (也常见:/pts mdl/)

例句 Examples

The Potts model generalizes the Ising model to more than two states.
Potts模型把Ising模型推广到两种以上的状态。

In statistical mechanics, the q-state Potts model is used to study phase transitions and critical behavior on lattices.
在统计力学中,q态Potts模型常用于研究格点系统中的相变与临界行为。

词源 Etymology

该术语来自物理学家 Renfrey B. Potts 的姓氏。Potts于1952年提出这一模型,用以把只能取两态的Ising自旋推广为可取q态的更一般情形,因此称为“Potts model”。

相关词 Related Words

文学与经典著作 Literary Works

  • R. J. Baxter, Exactly Solved Models in Statistical Mechanics(讨论并使用Potts模型等可解模型)
  • F. Y. Wu, “The Potts model,” Reviews of Modern Physics(经典综述文章,系统介绍Potts模型)
  • N. Goldenfeld, Lectures on Phase Transitions and the Renormalization Group(以Potts/Ising等模型讲解相变与重整化)
  • H. E. Stanley, Introduction to Phase Transitions and Critical Phenomena(在相变与临界现象框架中提及相关格点模型)
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