Re: [QE-users] GHz calculation with QE

2020-12-18 Thread Michal Krompiec
Hi Mahdi, Not really. You can get the dielectric function in MHz-THz range from the (temporal) autocorrelation of dipole moment from an MD simulation, but the timescale is way beyond the reach of DFT, by several orders of magnitude. Best regards, Michal Krompiec, Merck KGaA On Fri, Dec 18, 2020

[QE-users] GHz calculation with QE

2020-12-18 Thread Mahdi Faghihnasiri
Dear all, Is it possible to calculate the real and imaginary part of the dielectric function in the GHz region with DFT? Can these calculations be done with QE code? Or does it require a special or complimentary approximation and method? Best regards, Mahdi