66 citations · 509 across the 22 of their papers we have counts for
11 papers · 1 filter
The Bose-Hubbard model on a triangular lattice with diamond ring-exchange
V. G. Rousseau, K. Hettiarachchilage, K. -M. Tam +2
Ring-exchange interactions have been proposed as a possible mechanism for a Bose-liquid phase at zero temperature, a phase that is compressible with no superfluidity. Using the Sto…
Dual-fermion approach to the Anderson-Hubbard model
P. Haase, S. -X. Yang, T. Pruschke +2
We apply the recently developed dual fermion algorithm for disordered interacting systems to the Anderson-Hubbard model. This algorithm is compared with dynamical cluster approxima…
Spectral changes in layered -electron systems induced by Kondo hole substitution in the boundary-layer
Sudeshna Sen, J. Moreno, M. Jarrell +1
We investigate the effect of disorder on the dynamical spectrum of layered -electron systems. With random dilution of -sites in a single Kondo insulating layer, we explore th…
Competing magnetic states, disorder, and the magnetic character of Fe3Ga4
J. H. Mendez, C. E. Ekuma, Y. Wu +11
The physical properties of metamagnetic FeGa single crystals are investigated to explore the sensitivity of the magnetic states to temperature, magnetic field, and sample h…
Dual-fermion approach to interacting disordered fermion systems
S. -X. Yang, P. Haase, H. Terletska +4
We generalize the recently introduced dual fermion (DF) formalism for disordered fermion systems by including the effect of interactions. For an interacting disordered system the c…
Mean-field embedding of the dual fermion approach for correlated electron systems
S. -X. Yang, H. Terletska, Z. Y. Meng +2
To reduce the rapidly growing computational cost of the dual fermion lattice calculation with increasing system size, we introduce two embedding schemes. One is the real fermion em…
Dual Fermion Method for Disordered Electronic Systems
H. Terletska, S. -X. Yang, Z. Y. Meng +2
While the coherent potential approximation (CPA) is the prevalent method for the study of disordered electronic systems, it fails to capture non-local correlations and Anderson loc…
Solving the Parquet Equations for the Hubbard Model beyond Weak Coupling
Ka-Ming Tam, H. Fotso, S. -X. Yang +4
We find that imposing the crossing symmetry in the iteration process considerably extends the range of convergence for solutions of the parquet equations for the Hubbard model. Whe…
Dual Fermion Dynamical Cluster Approach for Strongly Correlated Systems
S. -X. Yang, H. Fotso, H. Hafermann +4
We have designed a new multi-scale approach for Strongly Correlated Systems by combining the Dynamical Cluster Approximation (DCA) and the recently introduced dual-fermion formalis…
Role of the van Hove Singularity in the Quantum Criticality of the Hubbard Model
K. -S. Chen, S. Pathak, S. -X. Yang +5
A quantum critical point (QCP), separating the non-Fermi liquid region from the Fermi liquid, exists in the phase diagram of the 2D Hubbard model [Vidhyadhiraja et. al, Phys. Rev.…
Thermodynamics of the Quantum Critical Point at Finite Doping in the 2D Hubbard Model: A Dynamical Cluster Approximation Study
K. Mikelsons, E. Khatami, D. Galanakis +3
We study the thermodynamics of the two-dimensional Hubbard model within the dynamical cluster approximation. We use continuous time quantum Monte Carlo as a cluster solver to avoid…