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单词 Space reflection symmetry
释义

Space reflection symmetry

中文百科

宇称 Parity (physics)

（重定向自Space reflection symmetry）
Dos representaciones dimensionales de paridad son dadas por un par de estados cuánticos que van entre ellos sobre la paridad. Sin embargo, esta representación puede reducirse siempre a combinaciones lineales de estados; cada uno de ellos es par o impar bajo la paridad. Se dice que todas las representaciones irreductibles de la paridad son de dimensión 1.
Top: P-symmetry: A clock built like its mirrored image will behave like the mirrored image of the original clock.Bottom: P-asymmetry: A clock built like its mirrored image will not behave like the mirrored image of the original clock.

量子力学中从左手座标系变换到右手座标系时描述系统行为的一个量；用符号P（Parity）表示。可把相乘性宇称量子数赋于量子系统和粒子，它在电磁力和强核力过程中是守恒的，但在弱核力过程中是不守恒的。弱放射性衰变具有完全的旋向性；中微子用左旋描述。

英语百科

Parity (physics) 宇称

（重定向自Space reflection symmetry）
Two dimensional representations of parity are given by a pair of quantum states which go into each other under parity. However, this representation can always be reduced to linear combinations of states, each of which is either even or odd under parity. One says that all irreducible representations of parity are one-dimensional.
Top: P-symmetry: A clock built like its mirrored image will behave like the mirrored image of the original clock.Bottom: P-asymmetry: A clock built like its mirrored image will not behave like the mirrored image of the original clock.

In quantum mechanics, a parity transformation (also called parity inversion) is the flip in the sign of one spatial coordinate. In three dimensions, it is also often described by the simultaneous flip in the sign of all three spatial coordinates (a point reflection):
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