Comment on "The role of electron-electron interactions in two-dimensional Dirac fermions"

Comment on "The role of electron-electron interactions in two-dimensional Dirac fermions"

Tang (Research Articles, 10 August 2018, p. 570) report on the properties of Dirac fermions with both on-site and Coulomb interactions. The substantial decrease, up to ~40%, of the Fermi velocity of Dirac fermions with on-site interaction is inconsistent with the numerical data near the Gross-Neveu...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 2019-12, Vol.366 (6470)
Hauptverfasser: Hesselmann, S, Lang, T C, Schuler, M, Wessel, S, Läuchli, A M
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
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Zusammenfassung:Tang (Research Articles, 10 August 2018, p. 570) report on the properties of Dirac fermions with both on-site and Coulomb interactions. The substantial decrease, up to ~40%, of the Fermi velocity of Dirac fermions with on-site interaction is inconsistent with the numerical data near the Gross-Neveu quantum critical point. This results from an inappropriate finite-size extrapolation.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.aav6869