73 citations · 530 across the 26 of their papers we have counts for
26 papers
Elimination of periodic nonlinearities of actuators with internal periodic processes
Nils Frederik Hasselmann, Maxime Nicloux, Alexander Sell
We discuss an algorithm that eliminates the periodic non-linearity of a bimorph piezo actuator by modifying the phase of the voltage waveforms used for driving the actuator. The pr…
Interplay of topology and geometry in frustrated 2d Heisenberg magnets
N. Hasselmann, A. Sinner
We investigate two-dimensional frustrated Heisenberg magnets using non-perturbative renormalization group techniques. These magnets allow for point-like topological defects which a…
Effective average action based approach to correlation functions at finite momenta
N. Hasselmann
We present a truncation scheme of the effective average action approach of the nonperturbative renormalization group which allows for an accurate description of the critical regime…
Nonlocal effective average action approach to crystalline phantom membranes
N. Hasselmann, F. L. Braghin
We investigate the properties of crystalline phantom membranes, at the crumpling transition and in the flat phase, using a nonperturbative renormalization group approach. We avoid…
Functional renormalization group approach to interacting bosons at zero temperature
Andreas Sinner, Nils Hasselmann, Peter Kopietz
We investigate the single-particle spectral density of interacting bosons within the non-perturbative functional renormalization group technique. The flow equations for a Bose gas…
Thermal fluctuations of free standing graphene
F. L. Braghin, N. Hasselmann
We use non-perturbative renormalization group techniques to calculate the momentum dependence of thermal fluctuations of graphene, based on a self-consistent calculation of the mom…