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单词 Creation Operator
释义

Creation Operator

中文百科

创生及湮灭算符 Creation and annihilation operators

(重定向自Creation Operator)

物理学中,zh-hans:湮没算符是将处于特定状态中的多个粒子,其粒子数下降1的算符;zh-hans:产生算符则是将处于特定状态中的多个粒子,其粒子数增加1的算符,创生算符也是消灭算符的伴算符(adjoint)。按照不同的课题,问题中的粒子类型也各有不同。举例来说,在量子化学与多体理论中,创生与消灭算符的作用对象常为电子。

消灭与创生算符在量子谐振子的场合中,特别指的是阶梯算符。在这样的场合,升算符诠释为创生算符,将一能量量子加到振子系统,对于降算符也是相同的模拟。它们可以用来代表声子。在物理学与化学的分支学科里,使用这些算符而不是波函数的方法称之为二次量子化。

英语百科

Creation and annihilation operators 创生及湮灭算符

(重定向自Creation Operator)

Creation and annihilation operators are mathematical operators that have widespread applications in quantum mechanics, notably in the study of quantum harmonic oscillators and many-particle systems. An annihilation operator lowers the number of particles in a given state by one. A creation operator increases the number of particles in a given state by one, and it is the adjoint of the annihilation operator. In many subfields of physics and chemistry, the use of these operators instead of wavefunctions is known as second quantization.

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更新时间:2025/6/17 22:52:55