38 citations · 130 across the 8 of their papers we have counts for
8 papers
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…
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…
Exact renormalization group for quantum spin systems
Jan Krieg, Peter Kopietz
We show that the diagrammatic approach to quantum spin systems developed in a seminal work by Vaks, Larkin, and Pikin [Sov. Phys. JETP 26, 188 (1968)] can be embedded in the framew…
Functional renormalization group approach to interacting three-dimensional Weyl semimetals
Anand Sharma, Arthur Scammell, Jan Krieg +1
We investigate the effect of long-range Coulomb interaction on the quasiparticle properties and the dielectric function of clean three-dimensional Weyl semimetals at zero temperatu…
Dual lattice functional renormalization group for the Berezinskii-Kosterlitz-Thouless transition: irrelevance of amplitude and out-of-plane fluctuations
Jan Krieg, Peter Kopietz
We develop a new functional renormalization group (FRG) approach for the two-dimensional XY-model by combining the lattice FRG proposed by Machado and Dupuis [Phys. Rev. E 82, 0411…
Thermodynamics and renormalized quasi-particles in the vicinity of the dilute Bose gas quantum critical point in two dimensions
Jan Krieg, Dominik Strassel, Simon Streib +2
We use the functional renormalization group (FRG) to derive analytical expressions for thermodynamic observables (density, pressure, entropy, and compressibility) as well as for si…