Comment on "The role of electron-electron interactions in two-dimensional Dirac fermions".
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- Record sourced from PubMed, PMID 31806785.
- Also identified by DOI 10.1126/science.aav6869.
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Abstract
Tang <i>et al</i> (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.