Add to ORKG20 pages, 12 figuresWe compute the spectral functions for the two-site dynamical cluster theory and for the two-orbital dynamical mean-field theory in the density-matrix renormalization group (DMRG) framework using Chebyshev expansions represented with matrix product states (MPS). We obtain quantitatively precise results at modest computational effort through technical improvements regarding the truncation scheme and the Chebyshev rescaling procedure. We furthermore establish the relation of the Chebyshev iteration to real-time evolution, and discuss technical aspects as computation time and implementation in detail
We describe the use of coupled-cluster theory as an impurity solver in dynamical mean-field theory (...
The dynamical mean-field theory (DMFT) maps a correlated lattice problem onto an impurity problem of...
The truncation or compression of the spectrum of Schmidt values is inherent to the matrix product st...
20 pages, 12 figuresWe compute the spectral functions for the two-site dynamical cluster theory and ...
International audienceWe compute the spectral functions for the two-site dynamical cluster theory an...
We improve a recently developed expansion technique for calculating real-frequency spectral function...
We present a new impurity solver for dynamical mean-field theory based on imaginary-time evolution o...
We present a new impurity solver for dynamical mean-field theory based on imaginary-time evolution o...
The dynamical mean-field theory (DMFT) has become a standard technique for the study of strongly cor...
We propose to calculate spectral functions of quantum impurity models using the time evolving block ...
In this paper we give an introduction to the numerical density matrix renormalization group (DMRG) a...
We implement an efficient numerical method to calculate response functions of complex impurities bas...
We present a methodology to solve the Anderson impurity model in the context of dynamical mean field...
A new algorithm to solve the dynamical mean field theory (DMFT) equations of strongly correlated mod...
We describe the use of coupled-cluster theory as an impurity solver in dynamical mean-field theory (...
The dynamical mean-field theory (DMFT) maps a correlated lattice problem onto an impurity problem of...
The truncation or compression of the spectrum of Schmidt values is inherent to the matrix product st...
20 pages, 12 figuresWe compute the spectral functions for the two-site dynamical cluster theory and ...
International audienceWe compute the spectral functions for the two-site dynamical cluster theory an...
We improve a recently developed expansion technique for calculating real-frequency spectral function...
We present a new impurity solver for dynamical mean-field theory based on imaginary-time evolution o...
We present a new impurity solver for dynamical mean-field theory based on imaginary-time evolution o...
The dynamical mean-field theory (DMFT) has become a standard technique for the study of strongly cor...
We propose to calculate spectral functions of quantum impurity models using the time evolving block ...
In this paper we give an introduction to the numerical density matrix renormalization group (DMRG) a...
We implement an efficient numerical method to calculate response functions of complex impurities bas...
We present a methodology to solve the Anderson impurity model in the context of dynamical mean field...
A new algorithm to solve the dynamical mean field theory (DMFT) equations of strongly correlated mod...
We describe the use of coupled-cluster theory as an impurity solver in dynamical mean-field theory (...
The dynamical mean-field theory (DMFT) maps a correlated lattice problem onto an impurity problem of...
The truncation or compression of the spectrum of Schmidt values is inherent to the matrix product st...