Add to ORKG\u3cp\u3eWe compare a variety of approximation schemes, all predicting the excitation structure of a semiconductor. All schemes are placed within one common framework, in which the electron self energy is the central quantity. In arriving at this self energy it turns out to be essential to screen the Coulomb interaction between electrons both statically and dynamically. We subsequently discuss the Hartree, Hartree-Fock, local density functional and Slater Xα schemes, which all lead to incorrect excitation structures, and the GW scheme of Hedin which, in view of recent successes, appears to be a very promising scheme.\u3c/p\u3
By calculating an exchange-correlation potential from the self-energy operator, we show that interpr...
By calculating an exchange-correlation potential from the self-energy operator, we show that interpr...
State-of-the-art theory addresses single-electron excitations in condensed matter by linking density...
We compare a variety of approximation schemes, all predicting the excitation structure of a semicond...
We compare a variety of approximation schemes, all predicting the excitation structure of a semicond...
The quasi-particle excitation structure in a semiconductor is strongly connected to and determined b...
Electronic excitations lie at the origin of most of the commonly measured spectra. However, the firs...
An accurate description of the electronic structure of semiconductors and insulators is essential in...
The local-density approximation (LDA) together with the half occupation (transitionstate) is notorio...
The local-density approximation (LDA) together with the half occupation (transitionstate) is notorio...
One of the fundamental problems in condensed-matter physics and quan-tum chemistry is the theoretica...
Electronic excitations in metals and semiconductors, measured through inelastic x-ray scattering, el...
We show how the density-functional theory (DFT) exchange-correlation potential Vxc(r) of a semicondu...
State-of-the-art theory addresses single-electron excitations in condensed matter by linking density...
he realization of mixtures of excitons and charge carriers in van der Waals materials presents a fro...
By calculating an exchange-correlation potential from the self-energy operator, we show that interpr...
By calculating an exchange-correlation potential from the self-energy operator, we show that interpr...
State-of-the-art theory addresses single-electron excitations in condensed matter by linking density...
We compare a variety of approximation schemes, all predicting the excitation structure of a semicond...
We compare a variety of approximation schemes, all predicting the excitation structure of a semicond...
The quasi-particle excitation structure in a semiconductor is strongly connected to and determined b...
Electronic excitations lie at the origin of most of the commonly measured spectra. However, the firs...
An accurate description of the electronic structure of semiconductors and insulators is essential in...
The local-density approximation (LDA) together with the half occupation (transitionstate) is notorio...
The local-density approximation (LDA) together with the half occupation (transitionstate) is notorio...
One of the fundamental problems in condensed-matter physics and quan-tum chemistry is the theoretica...
Electronic excitations in metals and semiconductors, measured through inelastic x-ray scattering, el...
We show how the density-functional theory (DFT) exchange-correlation potential Vxc(r) of a semicondu...
State-of-the-art theory addresses single-electron excitations in condensed matter by linking density...
he realization of mixtures of excitons and charge carriers in van der Waals materials presents a fro...
By calculating an exchange-correlation potential from the self-energy operator, we show that interpr...
By calculating an exchange-correlation potential from the self-energy operator, we show that interpr...
State-of-the-art theory addresses single-electron excitations in condensed matter by linking density...