115 citations · 795 across the 38 of their papers we have counts for
12 papers · 1 filter
Quantum Monte Carlo study of a bilayer symmetric Hubbard model
Yosef Caplan, Dror Orgad
We carry out a sign-problem-free quantum Monte Carlo calculation of a bilayer model with a repulsive intra-layer Hubbard interaction and a ferromagnetic inter-layer interaction. Th…
Confinement transition in a Kitaev-like honeycomb model with bond anisotropy
Gideon Wachtel, Dror Orgad
The honeycomb model is known to have both deconfined spin liquid and confined phases. We study here a confinement transition between the Kitaev spin liquid and a dimerized ph…
Transverse Thermoelectric Response as a Probe for Existence of Quasiparticles
Yoni Schattner, Vadim Oganesyan, Dror Orgad
The electrical Hall conductivities of any anisotropic interacting system with reflection symmetry obey sigma_{xy} = - sigma_{yx}. In contrast, we show that the analogous relation b…
A contractor-renormalization study of Hubbard plaquette clusters
Shirit Baruch, Dror Orgad
We implement the contractor-renormalization method to study the checkerboard Hubbard model on various finite-size clusters as function of the inter-plaquette hopping t' and the on-…
Inhomogeneous Phases in a Double-Exchange Magnet with Long Range Coulomb Interactions
Gideon Wachtel, Dror Orgad, D. I. Golosov
We consider a model with competing double-exchange (ferromagnetic) and super-exchange (anti-ferromagnetic) interactions in the regime where phase separation takes place. The presen…
Twist instability in strongly correlated carbon nanotubes
Wei Chen, A. V. Andreev, A. M. Tsvelik +1
We show that strong Luttinger correlations of the electron liquid in armchair carbon nanotubes lead to a significant enhancement of the onset temperature of the putative twist Peie…