V2EX fock space

Fock Space

Definition / 定义

福克空间(Fock space):量子力学与量子场论中的一种希尔伯特空间,用来描述粒子数可变的量子态(例如从 0 个粒子到任意多个粒子的叠加)。常写作不同粒子数子空间的直和,并以“占据数表象/数态(number states)”作为典型基底。

Pronunciation / 发音

/fk spes/

Examples / 例句

A laser field can be described using states in Fock space.
激光场可以用福克空间中的量子态来描述。

In quantum field theory, the creation and annihilation operators act on Fock space to build multi-particle states from the vacuum.
在量子场论中,产生算符与湮灭算符作用于福克空间,从真空态构造出多粒子态。

Etymology / 词源

“Fock”来自德国物理学家Vladimir Fock(弗拉基米尔福克)的姓氏;“space”意为“空间”。该术语用于纪念他对多粒子量子态形式化(尤其是粒子数可变体系的数学表述)相关发展的贡献。

Related Words / 相关词

Literary Works / 文学作品

  • The Quantum Theory of Fields(Steven Weinberg)
  • An Introduction to Quantum Field Theory(Michael E. Peskin & Daniel V. Schroeder)
  • Quantum Optics(Marlan O. Scully & M. Suhail Zubairy)
  • Modern Quantum Mechanics(J. J. Sakurai & Jim Napolitano)
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