3 papers
cond-mat.stat-mech2021
Dissipative spin dynamics in hot quantum paramagnets
Dmytro Tarasevych, Peter Kopietz
We use the functional renormalization approach for quantum spin systems developed by Krieg and Kopietz [Phys. Rev. B , 060403(R) (2019)] to calculate the spin-spin cor…
cond-mat.stat-mech2019
Spin functional renormalization group for quantum Heisenberg ferromagnets: Magnetization and magnon damping in two dimensions
Raphael Goll, Dmytro Tarasevych, Jan Krieg +1
We use the spin functional renormalization group recently developed by two of us [J. Krieg and P. Kopietz, Phys. Rev. B , 060403(R) (2019)] to calculate the magnetization…
cond-mat.str-el2018
A rich man's derivation of scaling laws for the Kondo model
Dmytro Tarasevych, Jan Krieg, Peter Kopietz
We show how the one-loop "poor man's scaling" equations for the Kondo model with arbitrary impurity spin can be obtained within the framework of the functional renormalization grou…