91 citations · 345 across the 14 of their papers we have counts for
12 papers · 1 filter
The Aubry-Andre Anderson model: Magnetic impurities coupled to a fractal spectrum
Ang-Kun Wu, Daniel Bauernfeind, Xiaodong Cao +3
The Anderson model for a magnetic impurity in a one-dimensional quasicrystal is studied using the numerical renormalization group (NRG). The main focus is elucidating the physics a…
Small moments without long-range magnetic ordering in the zero-temperature ground state of the double-perovskite iridate BaYIrO
Hermann Schnait, Daniel Bauernfeind, Tanusri Saha-Dasgupta +1
The spin-orbit coupled double perovskite iridate BaYIrO with occupancy of Ir is considered as a candidate material for a non-magnetic ground state. The issue of…
Minimally Entangled Typical Thermal States Algorithms for Finite Temperature Matsubara Green Functions
Daniel Bauernfeind, Xiaodong Cao, E. Miles Stoudenmire +1
We extend finite-temperature tensor network methods to compute Matsubara imaginary-time correlation functions, building on the minimally entangled typical thermal states (METTS) an…
Quantum Quasi-Monte Carlo algorithm for out-of-equilibrium Green functions at long times
Corentin Bertrand, Daniel Bauernfeind, Philipp T. Dumitrescu +3
We extend the recently developed Quantum Quasi-Monte Carlo (QQMC) approach to obtain the full frequency dependence of Green functions in a single calculation. QQMC is a general app…
Pseudogap Anderson impurity model out of equilibrium: A master equation tensor network approach
Delia M. Fugger, Daniel Bauernfeind, Max E. Sorantin +1
We study equilibrium and nonequilibrium properties of the single-impurity Anderson model with a power-law pseudogap in the density of states. In equilibrium, the model is known to…
Time Dependent Variational Principle for Tree Tensor Networks
Daniel Bauernfeind, Markus Aichhorn
We present a generalization of the Time Dependent Variational Principle (TDVP) to any finite sized loop-free tensor network. The major advantage of TDVP is that it can be employed…