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    <div class="moz-cite-prefix">there are a few options. from the
      simplest makov-payne energy correction to more elaborated
      martyna-tuckerman or ems corrections.<br>
      you can check the assume_isolated keyword in the &system
      namelist descritpion<br>
<a class="moz-txt-link-freetext" href="http://www.quantum-espresso.org/wp-content/uploads/Doc/INPUT_PW.html">http://www.quantum-espresso.org/wp-content/uploads/Doc/INPUT_PW.html</a><br>
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      stefano<br>
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      On 08/01/2017 22:20, ashkan shekaari wrote:<br>
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        <div>Dear experts,<br>
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        In dealing with charged unit cells, what kind of scheme is
        applied in quantum espresso to reduce periodic-image errors?<br>
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                                                    <div><span
                                                        style="color:rgb(0,0,0)"><span
style="background-color:rgb(255,255,255)"><span style="font-size:12.8px">Regards,<br>
                                                          </span></span></span></div>
                                                    <div><span
                                                        style="color:rgb(0,0,0)"><span
style="background-color:rgb(255,255,255)"><span style="font-size:12.8px">Ashkan</span><i
style="font-size:12.8px"><br>
                                                          <br>
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                                                    <div><font size="2"><b><span
style="color:rgb(0,0,0)"><span style="background-color:rgb(255,255,255)">Ashkan
                                                          Shekaari</span></span></b></font></div>
                                                    <div><span
                                                        style="color:rgb(0,0,0)"><span
style="background-color:rgb(255,255,255)">Plasma Physics Research Center</span></span></div>
                                                    <div><span
                                                        style="color:rgb(0,0,0)"><span
style="background-color:rgb(255,255,255)"><span style="font-size:12.8px"><span
style="font-size:12.8px">Science and Research Branch</span></span></span></span></div>
                                                    <div><span
                                                        style="color:rgb(0,0,0)"><span
style="background-color:rgb(255,255,255)">I A U, <span
                                                          style="font-size:12.8px">14778-93855
                                                          Tehran, Iran.</span></span></span></div>
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      <pre wrap="">_______________________________________________
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