An Eigenvalue Problem for a Fermi System and Lie Algebras [PDF]
Willi-Hans Steeb, Yorick HardyWe study a Fermi Hamilton operator $\hat K$ which does not commute with the number operator $\hat N$. The eigenvalue problem and the Schr\"odinger equation is solved. Entanglement is also discussed. Furthermore the Lie algebra generated by the two terms of the Hamilton operator is derived and the Lie algebra generated by the Hamilton operator and the number operator is also classified.View original: http://arxiv.org/abs/1304.3991
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