RT info:eu-repo/semantics/bookPart
T1 Application of the plane-wave-based perturbation theory to the density modulation induced by a point charge in an electron gas
T2 Many-body approaches at different scales: a tribute to Norman H. March on the occasion of his 90th birthday
A1 Nagy, I.
A1 Glasser, M. Lawrence
AB The induced electron density at the position of a single point charge Z embedded in a three-dimensional degenerate electron gas is studied at high densities. The perturbative, plane-wave-based treatment developed within the framework of density matrices by March and Murray (Phys Rev 120: 830, 1960, [1]) is applied here up to second order in Z. Comparison with the result obtained by considering the exact scattering enhancement in a bare Coulomb field is made. The small numerical difference found in the second-order term of the induced density at contact is analyzed following Wigner’s (Phys Rev 94: 77, 1954, [2]) similar perturbative treatment of the proton field in the hydrogen atom. The impact of the many-body screening is discussed as well.
PB Springer
SN 978-3-319-72373-0.
YR 2018
FD 2018
LK http://uvadoc.uva.es/handle/10324/29276
UL http://uvadoc.uva.es/handle/10324/29276
LA eng
NO Física Teórica. Atómica y Óptica
DS UVaDOC
RD 19-abr-2024