Vertex function compliant with the Ward identity for quasiparticle self-consistent calculations beyond GW
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{
"created": "2021-04-05T11:54:28.260296+00:00",
"revision": 10,
"metadata": {
"doi": "10.24435/materialscloud:hb-v3",
"references": [
{
"doi": "10.1103/PhysRevB.103.L161104",
"type": "Journal reference",
"url": "https://journals.aps.org/prb/abstract/10.1103/PhysRevB.103.L161104",
"citation": "A. Tal, W. Chen, A. Pasquarello, Phys. Rev. B 103, L161104 (2021)"
}
],
"_oai": {
"id": "oai:materialscloud.org:811"
},
"keywords": [
"GW",
"vertex",
"many-body perturbation theory",
"electronic structure",
"electronic bands",
"ionization potential"
],
"is_last": true,
"publication_date": "Aug 27, 2021, 19:44:52",
"owner": 141,
"license_addendum": null,
"contributors": [
{
"givennames": "Alexey",
"email": "alexey.tal@epfl.ch",
"familyname": "Tal",
"affiliations": [
"Chaire de Simulation \u00e0 l'Echelle Atomique (CSEA), Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland"
]
},
{
"givennames": "Wei",
"familyname": "Chen",
"affiliations": [
"Institute of Condensed Matter and Nanoscience (IMCN), Universit\u00e9 catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium"
]
},
{
"givennames": "Alfredo",
"familyname": "Pasquarello",
"affiliations": [
"Chaire de Simulation \u00e0 l'Echelle Atomique (CSEA), Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland"
]
}
],
"description": "We extend the quasiparticle self-consistent approach beyond the GW approximation by using a range-separated vertex function. The developed approach yields band gaps, dielectric constants, and band positions with an accuracy similar to highest-level electronic-structure calculations without exceeding the cost of regular quasiparticle self-consistent GW. We introduce an exchange-correlation kernel that accounts for the vertex over the full spatial range. In the long range it complies with the Ward identity, while it is approximated through the adiabatic local density functional in the short range. In this approach, the renormalization factor is balanced and the higher-order diagrams are effectively taken into account.",
"title": "Vertex function compliant with the Ward identity for quasiparticle self-consistent calculations beyond GW",
"edited_by": 100,
"license": "Creative Commons Attribution 4.0 International",
"id": "811",
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"mcid": "2021.140",
"version": 1,
"status": "published",
"conceptrecid": "810"
},
"updated": "2021-08-27T17:44:52.950512+00:00",
"id": "811"
}