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Showing 1 to 5 of 5 for “"hole excitations"”.
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Dynamic polarizability and collective modes in narrow-band electron systems
… dispersing plasmons pierce through the particle-hole continuum and extend in the forbidden energy band above it. This behavior enables decoupling of plasmons from particle-hole excitations. Such over-the-band plasmons are unable to decay into particle-hole pairs and thus are not subject to Landau …
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A quantum Monte Carlo study of the two-dimensional electron gas
… gas as a function of the density. For particle-hole excitations of the system, variational Monte Carlo is employed. Correlated sampling is introduced to calculate small energy differences between different excitations. The usual pair-product (Slater-Jastrow) trial wave function is found to lack …
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Quantum Monte Carlo simulations of electrons and holes
Electron and hole excitations in semiconductors may be approximated as particles with effective masses which interact via Coulomb potentials. We study systems of electrons and holes with quantum Monte Carlo (QMC) techniques, covering three related areas: (1) elastic scattering of excitons, (2) …
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Nanoparticle-nanoparticle interactions and light-matter interaction studied by simulated absorption spectroscopy
… decreases, the red shifting peaks originate from excitations with transition dipole moments along the z-axis with nondegenerate features. Conversely, the blue shifting peaks arise from excitations with transition dipole moments in the x and y direction with double degeneracy. The energy transfer …
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Photoneutron spectra from monoenergetic photons on Pb208 in the giant resonance
… is a linear combination of elementary particle-hole excitations. The decay of this state was assumed to be either by direct neutron emission from a particle-hole state or by thermalization and subsequent neutron evaporation. At low gamma energies, individual final states were resolved, but the …