463 citations · 1k across the 18 of their papers we have counts for
12 papers · 1 filter
Inchworm quasi Monte Carlo for quantum impurities
Hugo U. R. Strand, Joseph Kleinhenz, Igor Krivenko
The inchworm expansion is a promising approach to solving strongly correlated quantum impurity models due to its reduction of the sign problem in real and imaginary time. However,…
The Kondo Cloud in a 1D Nanowire
Joseph Kleinhenz, Igor Krivenko, Guy Cohen +1
A recent experiment [Nature 579, 210--213 (2020)] probed the extent of the Kondo cloud in 1D by measuring the effect of electrostatic perturbations applied a distance away from…
Dynamic Control of Nonequilibrium Metal-Insulator Transitions
Joseph Kleinhenz, Igor Krivenko, Guy Cohen +1
We demonstrate a first order metal-insulator phase transition in the repulsive, fully frustrated, single-band Hubbard model as a function of the coupling to a fermion bath. Time de…
Unconventional Hund Metal in a Weak Itinerant Ferromagnet
Xiang Chen, Igor Krivenko, Matthew B. Stone +6
The physics of weak itinerant ferromagnets is challenging due to their small magnetic moments and the ambiguous role of local interactions governing their electronic properties, ma…
Dynamics of Kondo voltage splitting after a quantum quench
Igor Krivenko, Joseph Kleinhenz, Guy Cohen +1
We analyze the time-dependent formation of the spectral function of an Anderson impurity model in the Kondo regime within a numerically exact real-time quantum Monte Carlo framewor…
Quantum spin fluctuations and evolution of electronic structure in cuprates
E. A. Stepanov, L. Peters, I. S. Krivenko +3
Correlation effects in CuO layers give rise to a complicated landscape of collective excitations in high-T cuprates. Their description requires an accurate account fo…
Quantum Monte Carlo solution of the dynamical mean field equations in real time
Qiaoyuan Dong, Igor Krivenko, Joseph Kleinhenz +3
We present real-time inchworm quantum Monte Carlo results for single-site dynamical mean field theory on an infinite coordination number Bethe lattice. Our numerically exact result…
Importance of effective dimensionality in manganese pnictides
Manuel Zingl, Elias Assmann, Priyanka Seth +2
In this paper we investigate the two manganese pnictides BaMnAs and LaMnAsO, using fully charge self-consistent density functional plus dynamical mean-field theory calculat…
TRIQS/CTHYB: A Continuous-Time Quantum Monte Carlo Hybridization Expansion Solver for Quantum Impurity Problems
Priyanka Seth, Igor Krivenko, Michel Ferrero +1
We present TRIQS/CTHYB, a state-of-the art open-source implementation of the continuous-time hybridisation expansion quantum impurity solver of the TRIQS package. This code is main…
TRIQS: A Toolbox for Research on Interacting Quantum Systems
Olivier Parcollet, Michel Ferrero, Thomas Ayral +4
We present the TRIQS library, a Toolbox for Research on Interacting Quantum Systems. It is an open-source, computational physics library providing a framework for the quick develop…
Slave rotor approach to dynamically screened Coulomb interactions in solids
Igor S. Krivenko, Silke Biermann
Recent studies of dynamical screening of the electronic Coulomb interactions in solids have revived interest in lattice models of correlated fermions coupled to bosonic degrees of…
Analytical approximation for single-impurity Anderson model
I. S. Krivenko, A. N. Rubtsov, M. I. Katsnelson +1
We have applied the recently developed dual fermion technique to the spectral properties of single-band Anderson impurity problem (SIAM). In our approach a series expansion is cons…