12 citations · 18 across the 8 of their papers we have counts for
8 papers
Influence of interactions on the chiral effect in Dirac semimetal
Maksim Ulybyshev, M. A. Zubkov
We consider the 1D Su-Schrieffer-Heeger (SSH) model. It was recently shown that, for the noninteracting model in its Dirac semimetal phase, the linear response of the axial charge…
Strain-Tuned Incommensurate Kekulé Spiral Order in Twisted Bilayer Graphene: A Quantum Many-Body Study
Cheng Huang, Yves H. Kwan, Maksim Ulybyshev +3
The physics of twisted bilayer graphene away from the exactly solvable chiral limit and the quantum Monte Carlo sign-problem-free charge neutrality point is elusive due to the expo…
Plasmon excitations in half-filled graphene: A Comparative study between Quantum Monte Carlo and Random Phase Approximation
Adrien Reingruber, Maksim Ulybyshev, Kitinan Pongsangangan
Transport properties of strongly correlated materials have contributions from quasiparticle excitations such as electrons and holes as well as emerging collective excitations such…
Angle-Tuned Gross-Neveu Quantum Criticality in Twisted Bilayer Graphene: A Quantum Monte Carlo Study
Cheng Huang, Nikolaos Parthenios, Maksim Ulybyshev +4
The fascinating quantum many-body states in twisted bilayber graphene (TBG) at magic angle, due to the interplay of Coulomb interactions and the quantum metrics of flat bands, have…
Hydrodynamics of particle-hole symmetric systems: a quantum Monte Carlo study
Adrien Reingruber, Kitinan Pongsangangan, Fakher Assaad +1
The emergence of hydrodynamic behavior in electronic flow within clean, particle-hole-symmetric systems at half-filling is a non-trivial problem. Navier-Stokes (NS) equations descr…
Beyond the instanton gas approach: dominant thimbles approximation for the Hubbard model
Maksim Ulybyshev, Fakher F. Assaad
To each complex saddle point of an action, one can attach a Lefschetz thimble on which the imaginary part of the action is constant. Cauchy theorem states that summation over a set…
Flat band projections: Sign problem mapping for frustrated spin systems
Maksim Ulybyshev, Anika Götz, Fakher Assaad
Projection of the Coulomb potential onto flat bands paves the way to design various interactions in the particle-hole and particle-particle channels. Here we pose the question if w…
Spectral functions of the honeycomb lattice with both the Hubbard and long-range Coulomb Interactions
Ho-Kin Tang, Indra Yudhistira, Udvas Chattopadhyay +4
The absence of screening of the non-local Coulomb interaction in Dirac systems at charge neutrality leads to the breakdown of the Fermi liquid and divergence of the Fermi velocity.…