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Spin singlet
In quantum mechanics, spin singlet is a composite particle whose total internal angular momentum, i.e. its spin, vanishes. Consequently, the composite particle can only have one possible value of the third component of the spin, namely zero, and therefore is a one-dimensional representation (a singlet).
The most typical example is a particle composed from two particles with spin equal to 1/2. The singlet state is
See also spin multiplet
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details