139 citations · 571 across the 33 of their papers we have counts for
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Coulomb interactions and renormalization of semi-Dirac fermions near a topological Lifshitz transition
Valeri N. Kotov, Bruno Uchoa, Oleg P. Sushkov
We aim to understand how the spectrum of semi-Dirac fermions is renormalized due to long-range Coulomb electron-electron interactions at a topological Lifshitz transition, where tw…
Spectral damping without quasiparticle decay: The dynamic structure factor of two-dimensional quantum Heisenberg antiferromagnets
Matthew C. O'Brien, Oleg P. Sushkov
Two-dimensional Heisenberg antiferromagnets play a central role in quantum magnetism, yet the nature of dynamic correlations in these systems at finite temperature has remained poo…
Colossal quasiparticle radiation in the Lifshitz spin liquid phase of a two-dimensional quantum antiferromagnet
Matthew C. O'Brien, Oleg P. Sushkov
Strong quantum fluctuations in magnetic systems can create disordered quantum spin liquid phases of matter which are not predicted by classical physics. The complexity of the exoti…
Anomalous thermal broadening from an infrared catastrophe in two-dimensional quantum antiferromagnets
Matthew C. O'Brien, Oleg P. Sushkov
The nature of quasiparticles in 2D quantum antiferromagnets at finite temperature remains an open question despite decades of theoretical work. In particular, it is not fully under…
Artificial Graphene in a Strong Magnetic Field: Bulk Current Distribution and Quantum Phase Transitions
Zeb E. Krix, Oleg P. Sushkov
We present calculations of the equilibrium current density and Chern numbers for a 2DEG in a periodic potential with infinite strip geometry and a perpendicular magnetic field. We…