V2EX wavefunction

Wavefunction

释义 Definition

波函数:量子力学中用来描述粒子或量子系统状态的数学函数(通常记作 ψ)。它本身一般不可直接观测,但其模平方 \(|ψ|^2\) 表示在某位置或状态下找到粒子的概率密度。(在更广义表述中也可指系统在不同基底下的“概率幅”。)

发音 Pronunciation (IPA)

/wevfkn/

例句 Examples

The wavefunction describes the state of an electron.
波函数描述电子的量子状态。

In quantum mechanics, measurement changes the wavefunction, which affects the probabilities of different outcomes.
在量子力学中,测量会改变波函数,从而影响不同结果出现的概率。

词源 Etymology

wavefunctionwave(波) + function(函数) 组合而成,字面意思是“像波一样变化的函数”。该术语与早期量子理论的“物质波”思想相关,常用于表述薛定谔方程中的未知函数 ψ,用以编码系统的量子信息。

相关词 Related Words

文学与著名作品 Literary & Notable Works

  • What Is Life? Erwin Schrdinger(《生命是什么》:讨论量子思想在生命问题上的启发,涉及波动力学与相关概念)
  • The Feynman Lectures on Physics, Vol. III Richard P. Feynman(《费曼物理学讲义》第三卷:系统讲解量子力学,包括波函数与测量)
  • Quantum Mechanics and Path Integrals Richard P. Feynman & Albert R. Hibbs(《量子力学与路径积分》:以路径积分视角讨论量子态与概率幅,关联波函数框架)
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