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Magnetic field driven instability in planar NJL model in real-time formalism
O. V. Gamayun, E. V. Gorbar, V. P. Gusynin
It is known that the symmetric (massless) state of the Nambu--Jona-Lasinio model in 2+1 dimensions in a magnetic field B is not the ground state of the system at zero temperature d…
Magneto-optical and optical probes of gapped ground states of bilayer graphene
E. V. Gorbar, V. P. Gusynin, A. B. Kuzmenko +1
We study the influence of different kinds of gaps in a quasiparticle spectrum on longitudinal and transverse optical conductivities of bilayer graphene. An exact analytical express…
Coexistence and competition of nematic and gapped states in bilayer graphene
E. V. Gorbar, V. P. Gusynin, V. A. Miransky +1
In bilayer graphene, the phase diagram in the plane of a strain-induced bare nematic term, , and a top-bottom gates voltage imbalance, , is obtained by solving…
Broken-symmetry quantum Hall states in bilayer graphene: Landau level mixing and dynamical screening
E. V. Gorbar, V. P. Gusynin, V. A. Miransky +1
For bilayer graphene in a magnetic field at the neutral point, we derive and solve a full set of gap equations including all Landau levels and taking into account the dynamically s…