▎ 摘　　要

Monte Carlo simulation of a 2+1 dimensional model of voltage-biased bilayer graphene, consisting of relativistic fermions with chemical potential mu coupled to charged excitations with opposite sign on each layer, has exposed noncanonical scaling of bulk observables near a quantum critical point found at strong coupling. We present a calculation of the quasiparticle dispersion relation E(k) as a function of exciton source j in the same system, employing partially twisted boundary conditions to boost the number of available momentum modes. The Fermi momentum k(F) and superfluid gap Delta are extracted in the j -> 0 limit for three different values of mu, and support a strongly interacting scenario at the Fermi surface with Delta similar to O(mu). We propose an explanation for the observation mu < k(F) in terms of a dynamical critical exponent z < 1.