83 citations · 214 across the 5 of their papers we have counts for
5 papers
The Hubbard model with smooth boundary conditions
M. Vekic, S. R. White
We apply recently developed smooth boundary conditions to the quantum Monte Carlo simulation of the two-dimensional Hubbard model. At half-filling, where there is no sign problem,…
Competition Between Antiferromagnetic Order and Spin-Liquid Behavior in the Two-Dimensional Periodic Anderson Model at Half-Filling
M. Vekic, J. W. Cannon, D. J. Scalapino +2
We study the two-dimensional periodic Anderson model at half-filling using quantum Monte Carlo (QMC) techniques. The ground state undergoes a magnetic order-disorder transition as…
Disorder Induced Phase Transition in a Random Quantum Antiferromagnet
Anders W. Sandvik, Marco Vekic
A two-dimensional Heisenberg model with random antiferromagnetic nearest-neighbor exchange is studied using quantum Monte Carlo techniques. As the strength of the randomness is inc…
Dynamically Triangulated Ising Spins in Flat Space
Marco Vekic, Shao Liu, Herbert W. Hamber
A model describing Ising spins with short range interactions moving randomly in a plane is considered. In the presence of a hard core repulsion, which prevents the Ising spins from…
Smooth Boundary Conditions For Quantum Lattice Systems
M. Vekic, S. R. White
We introduce a new type of boundary conditions, {\it smooth boundary conditions}, for numerical studies of quantum lattice systems. In a number of circumstances, these boundary con…