Numerical renormalization group method for quantum impurity systems

R Bulla, TA Costi, T Pruschke - Reviews of Modern Physics, 2008 - APS
In the early 1970s, Wilson developed the concept of a fully nonperturbative renormalization
group transformation. When applied to the Kondo problem, this numerical renormalization …

Mott quantum criticality in the one-band Hubbard model: Dynamical mean-field theory, power-law spectra, and scaling

H Eisenlohr, SSB Lee, M Vojta - Physical Review B, 2019 - APS
Recent studies of electrical transport, both theoretical and experimental, near the bandwidth-
tuned Mott metal-insulator transition have uncovered apparent quantum critical scaling of …

[HTML][HTML] Thermoelectric effects in quantum dots

M Yoshida, LN Oliveira - Physica B: Condensed Matter, 2009 - Elsevier
We report a numerical renormalization-group study of the thermoelectric effect in the single-
electron transistor (SET) and side-coupled geometries. As expected, the computed thermal …

Full density-matrix numerical renormalization group calculation of impurity susceptibility and specific heat of the Anderson impurity model

L Merker, A Weichselbaum, TA Costi - Physical Review B—Condensed Matter …, 2012 - APS
Recent developments in the numerical renormalization group (NRG) allow the construction
of the full density matrix (FDM) of quantum impurity models [see A. Weichselbaum and J. von …

Thermodynamics of the Anderson lattice

BH Bernhard, C Lacroix - Physical Review B, 1999 - APS
The periodic Anderson model is considered in a cubic lattice at half filling in the
paramagnetic and antiferromagnetic phases. A Green's-function approximation is introduced …

Numerical renormalization group calculation of impurity internal energy and specific heat of quantum impurity models

L Merker, TA Costi - Physical Review B—Condensed Matter and Materials …, 2012 - APS
We introduce a method to obtain the specific heat of quantum impurity models via a direct
calculation of the impurity internal energy requiring only the evaluation of local quantities …

Numerical renormalization group calculations of the magnetization of Kondo impurities with and without uniaxial anisotropy

M Höck, J Schnack - Physical Review B—Condensed Matter and Materials …, 2013 - APS
We study a Kondo impurity model with additional uniaxial anisotropy D in a nonzero
magnetic field B using the numerical renormalization group (NRG). The ratio ge/g S of …

[HTML][HTML] Numerical Renormalization Group computation of temperature dependent specific heat for a two-channel Anderson model

JVB Ferreira, AII Ferreira, AH Leite, VL Líbero - Journal of magnetism and …, 2012 - Elsevier
The Numerical Renormalization Group (NRG) is applied to diagonalize a two-channel
Anderson model describing a local magnetic impurity embedded in a fermionic bath. In spite …

Frontiers of quantum criticality: Mott transition, nuclear spins, and domain-driven transitions

H Eisenlohr - 2021 - tud.qucosa.de
Abstract (EN) The vicinity of continuous quantum phase transitions displays unique
properties such as scaling behavior and incoherent excitation spectra which are not found in …

Recursive computation of matrix elements in the numerical renormalization group

JWM Pinto, LN Oliveira - Computer Physics Communications, 2014 - Elsevier
The numerical renormalization group is an efficient method to diagonalize model
Hamiltonians describing correlated orbitals coupled to conduction states. While only the …