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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">I was looking at the ESM implementation in QE, and note that case iv of Otani and Sugino doesn't seem to be implemented (\epsilon_r finite in the bulk on both sides)--what is the
 reason for that?<br>
Does that have anything to do with the expressions for the Hartree energy, which I can't find in the original paper?<br>
Niels<br>
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<div style="font-family:Tahoma; font-size:13px"><font style="font-family:Helvetica" size="2"><span style="font-size:10pt">---<br>
Prof. Niels R. Walet                             Phone:  +44(0)1613063693<br>
School of Physics and Astronomy         Fax:    +44(0)1613064303<br>
The University of Manchester               Mobile: +44(0)7516622121<br>
Manchester, M13 9PL,  UK                  room 7.7, Schuster Building<br>
email: Niels.Walet@manchester.ac.uk<br>
web:   <a href="../../owa/redir.aspx?C=8f9098c1943846dcba17536b8618a38a&URL=http%3a%2f%2fwww.theory.physics.manchester.ac.uk%2f%7emccsnrw" target="_blank">
http://www.theory.physics.manchester.ac.uk/~mccsnrw</a></span></font></div>
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