Doublet State
In quantum mechanics, a doublet is a quantum state of a system with a 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. Essentially all occurrences of doublets in nature arise from rotational symmetry; spin 1/2 is associated with the fundamental representation of the Lie group SU(2), the group that defines rotational symmetry in three-dimensional space.
Read more about Doublet State: History and Applications
Famous quotes containing the words doublet and/or state:
“Dost thou think, though I am caparisoned like a man, I have
a doublet and hose in my disposition?”
—William Shakespeare (1564–1616)
“But one day he met a man who was a whole lot badder,
And now he’s dead, and we ain’t none the sadder.”
—Administration in the State of Texa, U.S. public relief program (1935-1943)