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The Fermi-Hubbard model at unitarity
Evgeni Burovski, Nikolay Prokof'ev, Boris Svistunov +1
We simulate the dilute attractive Fermi-Hubbard model in the unitarity regime using a diagrammatic determinant Monte Carlo algorithm with worm-type updates. We obtain the dependenc…
A cluster algorithm for resistively shunted Josephson junctions
Philipp Werner, Matthias Troyer
We present a cluster algorithm for resistively shunted Josephson junctions and similar physical systems, which dramatically improves sampling efficiency. The algorithm combines loc…
Universal conductance of nanowires near the superconductor-metal quantum transition
Subir Sachdev, Philipp Werner, Matthias Troyer
We consider wires near a zero temperature transition between superconducting and metallic states. The critical theory obeys hyperscaling, which leads to a universal frequency, temp…
On the Melting of Bosonic Stripes
Guido Schmid, Matthias Troyer
We use quantum Monte Carlo simulations to determine the finite temperature phase diagram and to investigate the thermal and quantum melting of stripe phases in a two-dimensional ha…
Néel and Spin-Peierls ground states of two-dimensional SU(N) quantum antiferromagnets
Kenji Harada, Naoki Kawashima, Matthias Troyer
The two-dimensional SU(N) quantum antiferromagnet, a generalization of the quantum Heisenberg model, is investigated by quantum Monte Carlo simulations. The ground state for $N\le…
Analytical and numerical study of hardcore bosons in two dimensions
K. Bernardet, G. G. Batrouni, J. -L. Meunier +3
We study various properties of bosons in two dimensions interacting only via onsite hardcore repulsion. In particular, we use the lattice spin-wave approximation to calculate the g…