What is parity?
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Answers
Answer:
A: A parity transformation means that the three spatial coordinates (x, y, and z)
of a quantum system are reversed in sign and direction. If the quantum wave function
remains the same under such a transformation, the system is said to have positive
parity. Example: cos(x) = cos(−x). If the quantum wave function changes sign
under such a transformation, the system is said to have negative parity. Example:
sin(x) = − sin(−x). Each energy state of an atom or nucleus has a definite parity,
either positive or negative. In a “quantum jump” atomic transition, if the parity
changes the properties of the emitted photon will be different than if the parity
remains the same. Parity is related to mirror-image symmetry
Answer:
The state of being equal, especially the state of having equal pay or position.