85 citations · 457 across the 22 of their papers we have counts for
22 papers
Dissipative Callan-Harvey mechanism in 2+1 D Dirac system: The fate of edge states along a domain wall
C. X. Zhang, M. Ulybyshev, C. Northe +1
The Callan-Harvey mechanism in 2+1 D Jackiw-Rebbi model is revisited. We analyzed Callan-Harvey anomaly inflow in the massive Chern insulator (quantum anomalous Hall system) subjec…
Validity of SLAC fermions for the (1 + 1)-dimensional helical Luttinger liquid
Zhenjiu Wang, Fakher Assaad, Maksim Ulybyshev
The Nielson-Ninomiya theorem states that a chirally invariant free fermion lattice action, which is local, translation invariant, and real necessarily has fermion doubling. The SLA…
Instanton gas approach to the Hubbard model
Maksim Ulybyshev, Christopher Winterowd, Fakher Assaad +1
In this article we consider a path integral formulation of the Hubbard model based on a SU(2)-symmetrical Hubbard-Stratonovich transformation that couples auxiliary field to the lo…
Mitigating spikes in fermion Monte Carlo methods by reshuffling measurements
Maksim Ulybyshev, Fakher Assaad
We propose a method to mitigate heavy-tailed distributions in fermion Quantum Monte Carlo simulations originating from zeros of the fermion determinant. In this case the second mom…
Bridging the gap between numerics and experiment in free standing graphene
Maksim Ulybyshev, Savvas Zafeiropoulos, Christopher Winterowd +1
We report results of large-scale quantum Monte Carlo (QMC) simulations of graphene. Using cutting-edge algorithmic improvements, we are able to consider spatial volumes, correspond…
Quantum phase transitions on the hexagonal lattice
Dominik Smith, Pavel Buividovich, Michael Körner +2
Hubbard-type models on the hexagonal lattice are of great interest, as they provide realistic descriptions of graphene and other related materials. Hybrid Monte Carlo simulations o…