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Title
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Analysis of the **N**=4 Hubbard ring using counting operators
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Author
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Abstract
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| We prove three theorems about the use of a counting operator to study the spectrum of model Hamiltonians. We analytically calculate the eigenvalues of the Hubbard ring with four lattice positions and apply our theorems to describe the observed level crossings. |
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Language
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English
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Source (journal)
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Physics letters : A. - Amsterdam, 1967, currens
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Publication
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Amsterdam
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North-Holland
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2009
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ISSN
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0375-9601
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Volume/pages
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373
:25
(2009)
, p. 2109-2113
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ISI
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000266766700002
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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