Models for energy loss in XPS are reviewed. We start with rigorous models to describe the
fundamental interaction of the electric fields from both the core-hole and the moving electron …

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

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 …

Single (on-site) and multisite (multiatom) resonant photoemission (MARPE) processes are
systematically studied by use of nonrelativistic Keldysh Green's function theory. We apply …

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 …

1s photoelectron angular distributions from fixed-in-space CO2, NO2, BF3 and CH3F
molecules have been calculated by X-ray photoelectron diffraction (XPD) theory with muffin …

Starting from a first principle many-body theory, we derive a general formula to describe
overall features in corelevel photoemission including plasmon losses and peak asymmetry …

We compare experimental measurements of the loss structure appearing in the Si2p and
Si1s photoemission lines for a large range of emission angles (between 0° and 82°) and …

A many-body relativistic theory to analyze X-ray photoelectron spectroscopy (XPS) and X-
ray absorption fine structure (XAFS) spectra has been developed on the basis of quantum …

A new nonrelativistic many-body theory to analyze X-ray photoelectron spectroscopy (XPS)
spectra has been developed on the basis of quantum electrodynamic (QED) Keldysh …