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2000 | 97 | 3 | 381-384

Article title

Correlation Induced Optimization of Wave Functions: the Hubbard Chain

Content

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Languages of publication

EN

Abstracts

EN
We determine the explicit form of the single-particle Wannier functions {w_{i}(r)} appearing in the parameters of quantum models. The method is illustrated on the example of the Hubbard chain, for which we derive the renormalized wave equation starting from a variational principle and by treating the system ground state energy as a functional of {w_{i}(r)} and their derivatives. In this manner, the optimized basis is obtained only after the electronic correlations have been included in the rigorous Lieb-Wu solution. The results for the ground state energy and the size of the renormalized s-type orbitals, both as a function of interatomic distance, are calculated explicitly.

Keywords

EN

Year

Volume

97

Issue

3

Pages

381-384

Physical description

Dates

published
2000-03

Contributors

author
  • Marian Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
author
  • Marian Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland
author
  • Institute of Physics, Tadeusz Kościuszko Technical University, Podchorążych 1, 30-084 Kraków, Poland

References

Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.bwnjournal-article-appv97z305kz
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