In quantum mechanics, a doublet is a composite quantum state of a system with an effective spin of 1 / 2 , such that there are two allowed values of the spin component, − 1 / 2 and + 1 / 2 . Quantum systems with two possible states are sometimes called two-level systems.
In quantum mechanics, a doublet is a composite quantum state of a system with an effective spin of 1 / 2 , such that there are two allowed values of the spin component, − 1 / 2 and + 1 / 2 . Quantum systems with two possible states are sometimes called two-level systems.
Source: Wikipedia "Doublet state" · CC BY-SA 4.0
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