<div dir="ltr"><div><div><div><div>Dear all,<br><br></div></div>I found that the fft and invfft in PW are specified for wavefunctions.<br></div>The dual space technique is used. In real space, the wavefunction is a real vector.<br>
<br>I want to write some code using 3D fft (forward and backward) in Quantum Espresso<br></div>for general complex vector (stored in 3D array).<br><div><br></div><div>Could you please give me some suggestions?<br></div><div>
Thank you in advance.<br><br></div><div>Best,<br></div><div>Fang<br></div></div>