2024-03-28T13:34:02Zhttp://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/292762021-06-24T07:21:12Zcom_10324_22154com_10324_954com_10324_894col_10324_22155
2018-03-30T14:58:45Z
urn:hdl:10324/29276
Application of the plane-wave-based perturbation theory to the density modulation induced by a point charge in an electron gas
Nagy, I.
Glasser, M. Lawrence
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.
2018-03-30T14:58:45Z
2018-03-30T14:58:45Z
2018
info:eu-repo/semantics/bookPart
978-3-319-72373-0.
http://uvadoc.uva.es/handle/10324/29276
eng
https://link.springer.com/chapter/10.1007/978-3-319-72374-7_11
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 International
Springer