Igor Krivenko
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View article: Next-generation EDIpack: A Lanczos-based package for quantum impurity models featuring general broken-symmetry phases, flexible bath topologies and multi-platform interoperability
Next-generation EDIpack: A Lanczos-based package for quantum impurity models featuring general broken-symmetry phases, flexible bath topologies and multi-platform interoperability Open
We present a next-generation version of EDIpack, a flexible, high-performance numerical library using Lanczos-based exact diagonalization to solve generic quantum impurity problems, such as those introduced in Dynamical Mean-Field Theory t…
View article: Codebase release 5.3 for EDIpack
Codebase release 5.3 for EDIpack Open
We present a next-generation version of EDIpack, a flexible, high-performance numerical library using Lanczos-based exact diagonalization to solve generic quantum impurity problems, such as those introduced in Dynamical Mean-Field Theory t…
View article: Embedded multi-boson exchange: A step beyond quantum cluster theories
Embedded multi-boson exchange: A step beyond quantum cluster theories Open
We introduce a diagrammatic multi-scale approach to the Hubbard model based on the interaction-irreducible (multi-boson) vertex of a small cluster embedded in a self-consistent medium. The vertex captures short-range correlations up to the…
View article: Inchworm quasi Monte Carlo for quantum impurities
Inchworm quasi Monte Carlo for quantum impurities Open
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, inchworm Monte Carlo is computationally expensive, convergi…
View article: Embedded multi-boson exchange: A step beyond quantum cluster theories
Embedded multi-boson exchange: A step beyond quantum cluster theories Open
We introduce a diagrammatic multi-scale approach to the Hubbard model based on the interaction-irreducible (multi-boson) vertex of a small cluster embedded in a self-consistent medium. The vertex captures short-ranged correlations up to th…
View article: Inchworm quasi Monte Carlo for quantum impurities
Inchworm quasi Monte Carlo for quantum impurities Open
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, inchworm Monte Carlo is computationally expensive, convergi…
View article: libcommute/pycommute: A quantum operator algebra domain-specific language and exact diagonalization toolkit
libcommute/pycommute: A quantum operator algebra domain-specific language and exact diagonalization toolkit Open
View article: The Kondo Cloud in a 1D Nanowire
The Kondo Cloud in a 1D Nanowire Open
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 $L$ away from the impurity on $T_K$. We study the Kondo cloud in a model…
View article: Magnetic field dependence of the in-plane hole <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>g</mml:mi></mml:math> factor in ZnSe- and CdTe-based quantum wells
Magnetic field dependence of the in-plane hole factor in ZnSe- and CdTe-based quantum wells Open
The effective $g$ factor of holes is measured in modulation-doped ZnSe/(Zn,Mg)(S,Se) quantum wells and from surface-state $p$-doped CdTe/(Cd,Mg)Te quantum wells by time-resolved pump-probe Kerr rotation. The measurements are performed at a…
View article: Dynamic control of nonequilibrium metal-insulator transitions
Dynamic control of nonequilibrium metal-insulator transitions Open
We demonstrate a first order metal-insulator phase transition in the\nrepulsive, fully frustrated, single-band Hubbard model as a function of the\ncoupling to a fermion bath. Time dependent manipulation of the bath coupling\nallows switchi…
View article: Short range proximity effect induced by exchange interaction in tunnel-coupled CdTe and (Cd,Mn)Te quantum wells
Short range proximity effect induced by exchange interaction in tunnel-coupled CdTe and (Cd,Mn)Te quantum wells Open
The coherent spin dynamics of electrons in tunnel-coupled CdTe and (Cd,Mn)Te quantum wells (QWs) is studied by time-resolved pump-probe Kerr rotation. The coupled QWs have different thicknesses; the narrow one is doped by Mn2+ m…
View article: Unconventional Hund Metal in a Weak Itinerant Ferromagnet
Unconventional Hund Metal in a Weak Itinerant Ferromagnet Open
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, many of which violate Fermi-liquid theory. While magnetic flu…
View article: Dynamics of Kondo voltage splitting after a quantum quench
Dynamics of Kondo voltage splitting after a quantum quench Open
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 framework. At steady state, splitting of the Kondo peak occurs with…
View article: Electron g-factor in coupled quantum wells CdTe and CdMnTe
Electron g-factor in coupled quantum wells CdTe and CdMnTe Open
In tunnel-coupled quantum wells (QWs) CdTe (20 nm wide) and CdMnTe (8 nm wide) separated by Cd 0.88 Mg 0.12 Te barrier with a thickness of L B = 5, 7, 9, and 11 monolayers (MLs), the dependence of electron g -factor on the barrier thicknes…
View article: Simulation of Correlated Lattice and Impurity Systems out of Equilibrium (Final Report)
Simulation of Correlated Lattice and Impurity Systems out of Equilibrium (Final Report) Open
In this project we developed unbiased, numerically exact methods for correlated quantum impurity and lattice models out of equilibrium, and used them in combination with the dynamical mean field theory to study the physics of lattice and i…
View article: Unconventional Hund Metal in MnSi
Unconventional Hund Metal in MnSi Open
The interplay between electronic itinerancy and localization in magnetic metals rests at the heart of numerous frontiers in condensed matter physics. Fluctuations of magnetic order in metals inevitably couple to charge carriers and are bel…
View article: TRIQS/SOM: Implementation of the stochastic optimization method for analytic continuation
TRIQS/SOM: Implementation of the stochastic optimization method for analytic continuation Open
View article: ALPSCore/ALPSCore: Version 2.3.0-rc.1
ALPSCore/ALPSCore: Version 2.3.0-rc.1 Open
The open source ALPSCore project, which is based on ALPS (Algorithms and Libraries for Physics Simulations) project, provides a collection of physics libraries and applications, with a focus on simulations of lattice models and strongly co…
View article: Updated Core Libraries of the ALPS Project
Updated Core Libraries of the ALPS Project Open
The open source ALPS (Algorithms and Libraries for Physics Simulations) project provides a collection of physics libraries and applications, with a focus on simulations of lattice models and strongly correlated electron systems. The librar…
View article: Publisher Correction: Quantum spin fluctuations and evolution of electronic structure in cuprates
Publisher Correction: Quantum spin fluctuations and evolution of electronic structure in cuprates Open
During the typesetting process of the original version of this Article the nomenclature for the nodal and anti-nodal points was incorrectly given. This has now been corrected in the HTML and PDF versions of the Article.
View article: Chebyshev polynomial representation of imaginary-time response functions
Chebyshev polynomial representation of imaginary-time response functions Open
Problems of finite-temperature quantum statistical mechanics can be formulated in terms of imaginary (Euclidean) -time Green's functions and self-energies. In the context of realistic Hamiltonians, the large energy scale of the Hamiltonian…
View article: Quantum Monte Carlo solution of the dynamical mean field equations in real time
Quantum Monte Carlo solution of the dynamical mean field equations in real time Open
In this paper 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 results are obtained on the L-shaped Keldysh contou…
View article: aeantipov/pomerol: 1.2
aeantipov/pomerol: 1.2 Open
pomerol is an exact diagonalization (full-ED) code written in C++ aimed at solving condensed matter second-quantized models of interacting fermions on finite size lattices at finite temperatures. It is designed to produce …
View article: Quantum many-body intermetallics: Phase stability of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Fe</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mi>Al</mml:mi></mml:mrow></mml:math> and small-gap formation in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Fe</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi>VAl</mml:mi></mml:mrow></mml:math>
Quantum many-body intermetallics: Phase stability of and small-gap formation in Open
Various intermetallic compounds harbor subtle electronic correlation effects.\nTo elucidate this fact for the Fe-Al system, we perform a realistic many-body\ninvestigation based on the combination of density functional theory with\ndynamic…
View article: Importance of effective dimensionality in manganese pnictides
Importance of effective dimensionality in manganese pnictides Open
In this paper we investigate the two manganese pnictides BaMn$_2$As$_2$ and\nLaMnAsO, using fully charge self-consistent density functional plus dynamical\nmean-field theory calculations. These systems have a nominally half-filled d\nshell…
View article: TRIQS/CTHYB: A continuous-time quantum Monte Carlo hybridisation expansion solver for quantum impurity problems
TRIQS/CTHYB: A continuous-time quantum Monte Carlo hybridisation expansion solver for quantum impurity problems Open
View article: pomerol: 1.1
pomerol: 1.1 Open
pomerol is an exact diagonalization (full-ED) code written in C++ aimed at solving condensed matter second-quantized models of interacting fermions on finite size lattices at finite temperatures. It is designed to produce …
View article: TRIQS: A toolbox for research on interacting quantum systems
TRIQS: A toolbox for research on interacting quantum systems Open
View article: Slave rotor approach to dynamically screened Coulomb interactions in solids
Slave rotor approach to dynamically screened Coulomb interactions in solids Open
Recent studies of dynamical screening of the electronic Coulomb interactions\nin solids have revived interest in lattice models of correlated fermions\ncoupled to bosonic degrees of freedom (Hubbard-Holstein-type models). We\npropose a dyn…
View article: Periodization in Cluster Dynamical Mean-Field Theory
Periodization in Cluster Dynamical Mean-Field Theory Open
The Dynamical Mean Field Theory (DMFT) maps the lattice problem onto a single site coupled to an electron bath, i.e. the Mean Field. To include spatial correlations we use CDMFT, the cluster extension that connects a cluster of many correl…