<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Dear users<br>Does anyone knows that how possible is the computation of total energy of a system with same total number of electron when we add a electron to the orbital OR subtract electron from that orbital? I mean how we put for example 1 additional electron to the orbital d.<br>I want this to compute U(hubbard) from <br>U=E(dn+1) + E(dn1)-2E(dn)<br>thanks a lot<br><br>Ali Kazempour<br>
Physics department, Isfahan University of Technology<br>
84156 Isfahan, Iran. Tel-1: +98 311 391 3733<br>
Fax: +98 311 391 2376 Tel-2: +98 311 391 2375</td></tr></table><br>