<div dir="ltr"><div dir="ltr">Dear all,<div><br></div><div>I know how to calculate Hubbard U from the linear response mechanism but I found that this is apparently not feasible for J; </div><div><br></div><div>"However, this
calculation has not been actually attempted yet and it is impossible to comment on its reliability" (<a href="https://www.cond-mat.de/events/correl12/manuscripts/cococcioni.pdf">https://www.cond-mat.de/events/correl12/manuscripts/cococcioni.pdf</a>)</div><div><br></div><div>I was curious if there is any other way to get U and J, I know some codes have implemented schemes in the constrained RPA way but how could one get this from QE?</div><div><br></div><div>Thanks in advance for your help!</div><div><br></div><div>Best,</div><div>Chris </div><div><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Postdoctoral Researcher<br>Center for Quantum Nanoscience, Institute for Basic Science<br>Ewha Womans University, Seoul, South Korea<blockquote type="cite" style="font-size:12.8px"><div dir="ltr"><div><div dir="ltr"></div></div></div></blockquote></div></div></div></div></div>