Understanding correlations and localization in the Hubbard model ...
Understanding correlations and localization in the Hubbard model ...
Understanding correlations and localization in the Hubbard model ...
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Exchange hole<br />
1<br />
0,8<br />
g(r)<br />
0,6<br />
0,4<br />
0,2<br />
1D<br />
2D<br />
3D<br />
Inf<strong>in</strong>ite D<br />
0<br />
0 2 4<br />
r/lattice parameter<br />
Figure 1:<br />
Two-body density for a system of sp<strong>in</strong>less<br />
fermions of various dimensions.<br />
<strong>Underst<strong>and</strong><strong>in</strong>g</strong> <strong>correlations</strong> <strong>and</strong> <strong>localization</strong> <strong>in</strong> <strong>the</strong> <strong>Hubbard</strong> <strong>model</strong> from variational calculations – p. 8