Local density-functional theory of frequency-dependent linear response.

TL;DR: In this paper, the optical properties of Titanium Nitride (TiN) have been investigated by using the linearized augmented plane wave method (LAPW) within density functional theory (DFT) with WIEN2k package.

TL;DR: In this paper , two alternative implementations for adiabatic magnon spectra: one based on the magnetic force theorem (MFT) and the other with a constraining field that enforces static noncollinear spin configurations.

TL;DR: In this paper, the authors describe the progress made recently in the first-principles evaluation of electronic response in metals, and discuss centers on the density-response function and its impact on physical observables, such as the loss spectrum for high-energy electrons and X rays, and dispersion relations of phonons and plasmons.

TL;DR: Molecular dynamics simulations and analytical theory study dynamic local field correction of the one-component plasma, revealing frequency-dependent structure and discrepancies from zero and high-frequency limits, with implications for plasmon dispersion and hydrodynamic predictions.

TL;DR: In this article, the ground state of an interacting electron gas in an external potential was investigated and it was proved that there exists a universal functional of the density, called F[n(mathrm{r})], independent of the potential of the electron gas.

TL;DR: In this article, a time-dependent version of density functional theory was proposed to deal with the non-perturbative quantum mechanical description of interacting many-body systems moving in a very strong timedependent external field.

TL;DR: Theoretical predictions on the dynamic properties are compared with the x ray and electron scattering data for the metallic electrons as discussed by the authors, and screening effects are analyzed and applied to calculations of the enhancement factor of the thermonuclear reaction rate and the electric resistivity in dense plasmas.

TL;DR: In this article, a density-functional theory for describing polarization-type many-body effects influencing the photoresponse of small electronic systems is presented. But it does not take account of the time-dependent fields induced by an external radiation field.