Nonequilibrium Green's functions provide a powerful tool for computing the dynamical
response and particle exchange statistics of coupled quantum systems. We formulate the …

In this review article we discuss some new developments in photoemission theories. We first
discuss basic theoretical framework on the basis of quantum electrodynamics (QED), which …

The depth distribution function (DDF) ϕ (z) in normal photoemission from solids is studied by
use of quantum full multiple scattering theory and non-Hermitian optical potential Σ. The …

We study the angular and energy dependence of surface and bulk plasmon losses
accompanying deep core excitations in simple metals. Here full multiple scatterings of …

Some important phonon effects observed in core and valence level photoemission spectra
are discussed on the basis of nonequilibrium Green's function theory. This theoretical …

Interatomic resonant Auger can take place when the photon energy is tuned to a resonant
core-level excitation of an atom neighbouring the emitting atom, with the emitting core-level …

We theoretically study the intrinsic and extrinsic effects in photoemission spectra excited
from core and also extended levels in space. Starting from Calori's formula written in terms of …

Angular distribution of emitted photoelectrons is theoretically studied for high-energy X-rays
where electric quadrupole and magnetic dipole transitions play some important roles in …

We discuss two important subjects pioneered by Fadley. As the first topic, we discuss the
energy dependence of the intensity ratio observed in Mn 3s multiplet splitting excited from …

Core-level interatomic resonant Auger in isolated molecules can take place when the
photon energy is tuned to a resonant core-level excitation of an atom neighbouring the …