Multiorbital Quantum Impurity Solver for General Interactions and Hybridizations
arXiv:1907.08570 · doi:10.1103/PhysRevLett.124.206405
Abstract
We present a numerically exact Inchworm Monte Carlo method for equilibrium multiorbital quantum impurity problems with general interactions and hybridizations. We show that the method, originally developed to overcome the dynamical sign problem in certain real-time propagation problems, can also overcome the sign problem as a function of temperature for equilibrium quantum impurity models. This is shown in several cases where the current method of choice, the continuous-time hybridization expansion, fails due to the sign problem. Our method therefore enables simulations of impurity problems as they appear in embedding theories without further approximations, such as the truncation of the hybridization or interaction structure or a discretization of the impurity bath with a set of discrete energy levels, and eliminates a crucial bottleneck in the simulation of ab initio embedding problems.
References in corpus (22)
- Continuous-time Monte Carlo methods for quantum impurity models
- The numerical renormalization group method for quantum impurity systems
- Strong electronic correlations from Hund's coupling
- Quantum Monte Carlo Impurity Solver for Cluster DMFT and Electronic Structure Calculations in Adjustable Base
- Hybridization expansion impurity solver: General formulation and application to Kondo lattice and two-orbital models
- Spin freezing transition and non-Fermi-liquid self-energy in a 3-orbital model
- Continuous-time auxiliary field Monte Carlo for quantum impurity models
- Truncated Configuration Interaction expansions as solvers for correlated quantum impurity models and dynamical mean field theory
- Updated Core Libraries of the ALPS Project
- Sum-rules and bath-parametrization for quantum cluster theories
- Chebyshev Matrix Product State Impurity Solver for the Dynamical Mean-Field Theory
- Systematically improvable multi-scale solver for correlated electron systems
- Finite temperature quantum embedding theories for correlated systems
- Inchworm Monte Carlo for exact non-adiabatic dynamics I. Theory and algorithms
- Unified description of correlations in double quantum dots
- Currents and Green's functions of impurities out of equilibrium -- results from inchworm Quantum Monte Carlo
- Coupled-cluster impurity solvers for dynamical mean-field theory
- Dynamics of Kondo voltage splitting after a quantum quench
- Quantum Monte Carlo solution of the dynamical mean field equations in real time
- Inclusion-Exclusion Principle for Many-Body Diagrammatics
- Updated Core Libraries of the ALPS Project
- Coupled Cluster as an impurity solver for Green's function embedding methods
Cited by in corpus (26)
- Learning Feynman Diagrams with Tensor Trains
- A Tensor Train Continuous Time Solver for Quantum Impurity Models
- Nonequilibrium open quantum systems with multiple bosonic and fermionic environments: A hierarchical equations of motion approach
- Revealing strong correlations in higher order transport statistics: a noncrossing approximation approach
- Analytical solution for time-integrals in diagrammatic expansions: application to real-frequency diagrammatic Monte Carlo
- Pseudoparticle vertex solver for quantum impurity models
- Equilibrium Quantum Impurity Problems via Matrix Product State Encoding of the Retarded Action
- Resolving the nonequilibrium Kondo singlet in energy- and position-space using quantum measurements
- Diagrammatic Monte Carlo Method for Impurity Models with General Interactions and Hybridizations
- Metal-Insulator and Magnetic Phase Diagram of CaRuO from Auxiliary Field Quantum Monte Carlo and Dynamical Mean Field Theory
- Decomposing imaginary time Feynman diagrams using separable basis functions: Anderson impurity model strong coupling expansion
- Real-time Impurity Solver Using Grassmann Time-Evolving Matrix Product Operators
- Interaction expansion inchworm Monte Carlo solver for lattice and impurity models
- Infinite Grassmann Time-Evolving Matrix Product Operator Method in the Steady State
- The Bold-Thin-Bold Diagrammatic Monte Carlo Method for Open Quantum Systems
- Solving quantum impurity problems on the L-shaped Kadanoff-Baym contour
- Real-Time Simulation of Open Quantum Spin Chains with Inchworm Method
- Inchworm quasi Monte Carlo for quantum impurities
- Transient dynamical phase diagram of the spin-boson model
- Numerical analysis for inchworm Monte Carlo method: Sign problem and error growth
- Infinite Grassmann time-evolving matrix product operator method for zero-temperature equilibrium quantum impurity problems
- Third-order strong-coupling impurity solver for real-frequency DMFT: Accurate spectral functions for antiferromagnetic and photo-doped states
- Mixed-configuration approximation for multiorbital systems out of equilibrium
- Inchworm tensor train hybridization expansion quantum impurity solver
- Transient Dynamical Phase Diagram of the Spin-Boson Model at Finite Temperature
- Automated evaluation of imaginary time strong coupling diagrams by sum-of-exponentials hybridization fitting