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Eigenspinor
・ Eigenstate thermalization hypothesis
・ Eigenstrain
・ Eigensystem realization algorithm
・ EigenTrust
・ Eigenvalue algorithm
・ Eigenvalue perturbation
・ Eigenvalues and eigenvectors
・ Eigenvalues and eigenvectors of the second derivative
・ Eigenvector slew
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・ Eiger (disambiguation)
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Eigenspinor : ウィキペディア英語版
Eigenspinor
In quantum mechanics, eigenspinors are thought of as basis vectors representing the general spin state of a particle. Strictly speaking, they are not vectors at all, but in fact spinors. For a single spin 1/2 particle, they can be defined as the eigenvectors of the Pauli matrices.
== General eigenspinors ==
In quantum mechanics, the spin of a particle or collection of particles is quantized. In particular, all particles have either half integer or integer spin. In the most general case, the eigenspinors for a system can be quite complicated. If you have a collection of Avogadro's number of particles, each one with two (or more) possible spin states, there would be no hope of writing down a complete set of eigenspinors. However, eigenspinors are very useful when dealing with the spins of a very small number of particles.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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