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PaulDragulin (talk | contribs) (New page: Express <math> \frac{}{}S^2 </math> for two spin-1/2 particles in the direct product basis. <math>{\hbar}^2\begin{pmatrix} 2 & 0 & 0 & 0\\ 0 & 1 & 1 & 0\\ 0 & 1 & 1 & 0\\ 0 & 0...) |
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Based on exercise 15.1.1. from Principles of Quantum Mechanics, 2nd ed. by Shankar: | |||
Express <math> \frac{}{}S^2 </math> for two spin-1/2 particles in the direct product basis. | Express <math> \frac{}{}S^2 </math> for two spin-1/2 particles in the direct product basis. | ||
<math> \frac{}{}S^2 = (\vec{S_1} \cdot \vec{S_2})^2 = S_1^2 + S_2^2 +2\vec{S_1} \cdot \vec{S_2}</math> | |||
Revision as of 17:13, 25 April 2010
Based on exercise 15.1.1. from Principles of Quantum Mechanics, 2nd ed. by Shankar:
Express for two spin-1/2 particles in the direct product basis.
