Atomically thin two-dimensional (2D) materials host a rich set of electronic states that differ
substantially from those of their bulk counterparts due to quantum confinement and …

When a nucleus in an atom undergoes a collision, there is a small probability of an electron
being excited inelastically as a result of the Migdal effect. In this Letter, we present the first …

We show that the rate for dark-matter–electron scattering in an arbitrary material is
determined by an experimentally measurable quantity, the complex dielectric function, for …

We present DarkELF, a python package to calculate interaction rates of light dark matter in
dielectric materials, including screening effects. The full response of the material is …

Linear optical properties can be accurately calculated using the Bethe-Salpeter equation.
After introducing a suitable product basis for the electron-hole pairs, the Bethe-Salpeter …

X-ray Thomson scattering is an important experimental technique used to measure the
temperature, ionization state, structure, and density of warm dense matter (WDM). The …

Absorption spectra of very small metal clusters exhibit individual peaks that reflect the
discreteness of their localized electronic states. With increasing size, these states develop …

Since a few breakthroughs in the fundamental understanding of the effects of swift heavy
ions (SHIs) decelerating in the electronic stopping regime in the matter have been achieved …

In this chapter, time-dependent density functional theory is introduced and an outline of the
Runge–Gross theorem is presented. An equation for linear response within time-dependent …

The development of plasmonic and metamaterial devices requires the research of high-
performance materials alternative to standard noble metals. Renewed as a refractory stable …