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- W3137604018 abstract "The description of the electromagnetic interaction in two-dimensional Dirac materials, such as graphene and transition-metal dichalcogenides, in which electrons move in the plane and interact via virtual photons in 3D, leads naturally to the emergence of a projected theory, called pseudo-quantum electrodynamics (PQED), as an effective model suitable for describing electromagnetic interaction in these systems. In this work, we investigate the role of a complete set of four-fermion interactions in the renormalization group functions when we coupled it with the anisotropic version of massive PQED, where we take into account the fact that the Fermi velocity is not equal to the light velocity. We calculate the electron self-energy in the dominant order in the $1/N$ expansion in the regime where ${m}^{2}ensuremath{ll}{p}^{2}$. We show that the Fermi velocity renormalization is insensitive to the presence of quartic fermionic interactions, whereas the renormalized mass may have two different asymptotic behaviors at the high-density limit, which means a high-energy scale." @default.
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- W3137604018 date "2021-05-19" @default.
- W3137604018 modified "2023-09-25" @default.
- W3137604018 title "Influence of the four-fermion interactions in a <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mo stretchy=false>(</mml:mo><mml:mn>2</mml:mn><mml:mo>+</mml:mo><mml:mn>1</mml:mn><mml:mo stretchy=false>)</mml:mo><mml:mi mathvariant=normal>D</mml:mi></mml:mrow></mml:math> massive electron system" @default.
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- W3137604018 doi "https://doi.org/10.1103/physrevd.103.105016" @default.
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