Momentum distribution and renormalization factor in sodium and the electron gas

Simo Huotari, J. Aleksi Soininen, Tuomas Pylkkänen, Keijo Hämäläinen, Arezki Issolah, Andrey Titov, Jeremy McMinis, Jeongnim Kim, Ken Esler, David M. Ceperley, Markus Holzmann, Valerio Olevano

Research output: Contribution to journalArticlepeer-review

Abstract

We present experimental and theoretical results on the momentum distribution and the quasiparticle renormalization factor in sodium. From an x-ray Compton-profile measurement of the valence-electron-momentum density, we derive its discontinuity at the Fermi wave vector. This yields an accurate measure of the renormalization factor that we compare with quantum Monte Carlo and G0W0 calculations performed both on crystalline sodium and on the homogeneous electron gas.

Original languageEnglish (US)
Article number086403
JournalPhysical review letters
Volume105
Issue number8
DOIs
StatePublished - Aug 19 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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