50 citations · 344 across the 40 of their papers we have counts for
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The Semimetal-Antiferromagnetic Mott Insulator Quantum Phase Transition of the Hubbard Model on the Honeycomb Lattice
Johann Ostmeyer, Evan Berkowitz, Stefan Krieg +3
The Hubbard model on the honeycomb lattice undergoes a quantum phase transition from a semimetallic to a Mott insulating phase and from a disordered to an anti-ferromagnetically ph…
The Hubbard Model on the Honeycomb Lattice with Hybrid Monte Carlo
Johann Ostmeyer
We take advantage of recent improvements in the grand canonical Hybrid Monte Carlo (HMC) algorithm, to perform a precision study of the single-particle gap in the hexagonal Hubbard…
The Hubbard model with fermionic tensor networks
Manuel Schneider, Johann Ostmeyer, Karl Jansen +2
Many electromagnetic properties of graphene can be described by the Hubbard model on a honeycomb lattice. However, this system suffers strongly from the sign problem if a chemical…
Beer Mats make bad Frisbees
Johann Ostmeyer, Christoph Schürmann, Carsten Urbach
In this article we show why flying and rotating beer mats, CDs, or other flat disks will eventually flip in the air and end up flying with backspin, thus, making them unusable as f…
Simulating both parity sectors of the Hubbard Model with Tensor Networks
Manuel Schneider, Johann Ostmeyer, Karl Jansen +2
Tensor networks are a powerful tool to simulate a variety of different physical models, including those that suffer from the sign problem in Monte Carlo simulations. The Hubbard mo…
The Antiferromagnetic Character of the Quantum Phase Transition in the Hubbard Model on the Honeycomb Lattice
Johann Ostmeyer, Evan Berkowitz, Stefan Krieg +3
We provide a unified, comprehensive treatment of all operators that contribute to the anti-ferromagnetic, ferromagnetic, and charge-density-wave structure factors and order paramet…