<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div id="yiv2577271045"><div><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"><div id="yiv2577271045yui_3_7_2_31_1370455311074_39"><font face="times new roman, new york, times, serif">Hello pw_forum,</font></div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39"><font face="times new roman, new york, times, serif"><br></font></div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39"><font face="times new roman, new york, times, serif" id="yiv2577271045yui_3_7_2_31_1370455311074_89">I have a question with regard to the normal modes at non G-point (q/=0).</font></div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39"><font face="times new roman, new york, times, serif" id="yiv2577271045yui_3_7_2_31_1370455311074_85">As discussed
previously [1], phase is random.</font></div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39"><font face="times new roman, new york, times, serif" id="yiv2577271045yui_3_7_2_31_1370455311074_81">Thus my question is, how one can obtain displacements in real space from those
complex displacements?</font></div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39"><font face="times new roman, new york, times, serif" id="yiv2577271045yui_3_7_2_31_1370455311074_106"><br id="yiv2577271045yui_3_7_2_31_1370455311074_108"></font></div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39" style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><font face="times new roman, new york, times, serif" id="yiv2577271045yui_3_7_2_31_1370455311074_111"><br id="yiv2577271045yui_3_7_2_31_1370455311074_113"></font></div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39" style="color:rgb(0, 0, 0);font-size:16px;font-family:'times new roman', 'new
york', times, serif;background-color:transparent;font-style:normal;"><font face="times new roman, new york, times, serif" id="yiv2577271045yui_3_7_2_31_1370455311074_71">1. http://qe-forge.org/pipermail/pw_forum/2006-August/079408.html</font></div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39"><br></div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39" style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;">= = = = = = = = = =</div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39"><font face="times new roman, new york, times, serif" id="yiv2577271045yui_3_7_2_31_1370455311074_64">Alexandr Fonari,</font></div><div id="yiv2577271045yui_3_7_2_31_1370455311074_39"><font face="times new roman, new york, times, serif" id="yiv2577271045yui_3_7_2_31_1370455311074_60">graduate student,</font></div><div
id="yiv2577271045yui_3_7_2_31_1370455311074_39"><font face="times new roman, new york, times, serif" id="yiv2577271045yui_3_7_2_31_1370455311074_56">Georgia
Institute of Technology.</font></div></div></div></div></div></body></html>