General expressions for the matrix elements of the tight-binding operator within the Racah-Wigner algebra*

Thomas Möller ()
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Thomas Möller: Physikalisches Institut, Universität zu Köln

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 12, 1-78

Abstract: Abstract General expressions for the matrix elements of the tight-binding operator are presented using the Racah-Wigner algebra, where the wave functions are expressed as coupled multiplet wave functions within a given angular momentum coupling scheme. The knowledge of all possible Slater determinants is not necessary and the matrix elements can be written as compact expressions computable with arbitrary accuracy.

Keywords: Computational; Methods (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1140/epjb/e2016-70500-1

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