46 citations · 100 across the 5 of their papers we have counts for
5 papers
Finite-Temperature Dynamics and Thermal Intraband Magnon Scattering in Haldane Spin-One Chains
Jonas Becker, Thomas Köhler, Alexander C. Tiegel +3
The antiferromagnetic spin-one chain is considerably one of the most fundamental quantum many-body systems, with symmetry protected topological order in the ground state. Here, we…
Optical conductivity of the Hubbard chain away from half filling
Alexander C. Tiegel, Thomas Veness, Piet E. Dargel +4
We consider the optical conductivity in the metallic phase of the one-dimensional Hubbard model. Our results focus on the vicinity of half filling and the frequency regime…
Dynamical properties of the sine-Gordon quantum spin magnet Cu-PM at zero and finite temperature
Alexander C. Tiegel, Andreas Honecker, Thomas Pruschke +4
The material copper pyrimidine dinitrate (Cu-PM) is a quasi-one-dimensional spin system described by the spin-1/2 XXZ Heisenberg antiferromagnet with Dzyaloshinskii-Moriya interact…
Matrix product state formulation of frequency-space dynamics at finite temperatures
Alexander C. Tiegel, Salvatore R. Manmana, Thomas Pruschke +1
We present a flexible density-matrix renormalization group approach to calculate finite-temperature spectral functions of one-dimensional strongly correlated quantum systems. The m…
Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain
A. C. Tiegel, P. E. Dargel, K. A. Hallberg +2
In order to study the interplay between Kondo and Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction, we calculate the spin-spin correlation functions between two Kondo impurities co…