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Showing 2013 · cond-mat.str-elShow all
3 papers · 2 filters
cond-mat.str-el2013★ 22 cited
Coupling, merging, and splitting Dirac points by electron-electron interaction
Balázs Dóra, Igor F. Herbut, Roderich Moessner
The manipulation and movement of Dirac points in the Brillouin zone by the electron-electron interaction is considered within leading order perturbation theory. At the merging poin…
cond-mat.str-el2013★ 286 cited
Pinning the order: the nature of quantum criticality in the Hubbard model on honeycomb lattice
Fakher F. Assaad, Igor F. Herbut
In numerical simulations, spontaneously broken symmetry is often detected by computing two-point correlation functions of the appropriate local order parameter. This approach, howe…
cond-mat.str-el2013★ 23 cited
Universal conductivity of graphene in the ultra-relativistic regime
Igor F. Herbut, Vieri Mastropietro
We calculate the optical (cutoff >> frequency >> temperature) conductivity in clean graphene in the ultimate low-energy regime, when retardation effects of the electromagnetic inte…