Research paperTheoreticalElectric conductivity in graphene: Kubo model versus a nonlocal quantum field theory modelPablo Rodriguez-Lopez, Jian-Sheng Wang, Mauro AntezzaarXiv preprint·2025·10.1126/science.1102896·arXiv:2403.02279AbstractWe compare three models of graphene electric conductivity: a non-local Kubo model, a local model derived by Falkovsky, and a non-local quantum field theory (QFT) polarization-based model. The paper shows that the local model is the q→0 limit of the non-local Kubo and QFT models, and that the non-local QFT expression used in the literature exhibits non-physical plasma-like behavior unless the conductivity is properly regularized. With the standard regularized conductivity and losses included, the QFT and Kubo models coincide.Read more
Research paperTheoreticalElectric conductivity in graphene: Kubo model versus a nonlocal quantum field theory modelPablo Rodriguez-Lopez, Jian-Sheng Wang, Mauro AntezzaarXiv preprint·2025·10.1126/science.1102896·arXiv:2403.02279AbstractWe compare three models of graphene electric conductivity: a non-local Kubo model, a local model derived by Falkovsky, and a non-local quantum field theory (QFT) polarization-based model. The paper shows that the local model is the q→0 limit of the non-local Kubo and QFT models, and that the non-local QFT expression used in the literature exhibits non-physical plasma-like behavior unless the conductivity is properly regularized. With the standard regularized conductivity and losses included, the QFT and Kubo models coincide.Read more
Research paperTheoreticalElectric conductivity in graphene: Kubo model versus a nonlocal quantum field theory modelPablo Rodriguez-Lopez, Jian-Sheng Wang, Mauro AntezzaarXiv preprint·2025·10.1126/science.1102896·arXiv:2403.02279AbstractWe compare three models of graphene electric conductivity: a non-local Kubo model, a local model derived by Falkovsky, and a non-local quantum field theory (QFT) polarization-based model. The paper shows that the local model is the q→0 limit of the non-local Kubo and QFT models, and that the non-local QFT expression used in the literature exhibits non-physical plasma-like behavior unless the conductivity is properly regularized. With the standard regularized conductivity and losses included, the QFT and Kubo models coincide.Read more
Research paperTheoreticalElectric conductivity in graphene: Kubo model versus a nonlocal quantum field theory modelPablo Rodriguez-Lopez, Jian-Sheng Wang, Mauro AntezzaarXiv preprint·2025·10.1126/science.1102896·arXiv:2403.02279AbstractWe compare three models of graphene electric conductivity: a non-local Kubo model, a local model derived by Falkovsky, and a non-local quantum field theory (QFT) polarization-based model. The paper shows that the local model is the q→0 limit of the non-local Kubo and QFT models, and that the non-local QFT expression used in the literature exhibits non-physical plasma-like behavior unless the conductivity is properly regularized. With the standard regularized conductivity and losses included, the QFT and Kubo models coincide.Read more
