1 citations · 1 across the 1 of their papers we have counts for
4 papers
Spatial structure of magnetic polarons in strongly interacting antiferromagnets
K. K. Nielsen, M. A. Bastarrachea-Magnani, T. Pohl +1
The properties of mobile impurities in quantum magnets are fundamental for our understanding of strongly correlated materials and may play a key role in the physics of high-tempera…
Superfluid flow of polaron polaritons above Landau's critical velocity
K. Knakkergaard Nielsen, A. Camacho-Guardian, G. M. Bruun +1
We develop a theory for the interaction of light with superfluid optical media, describing the motion of quantum impurities that are created and dragged through the liquid by propa…
Polariton dynamics in strongly interacting quantum many-body systems
A. Camacho-Guardian, K. Knakkergaard Nielsen, T. Pohl +1
We develop a theory for light propagating in an atomic Bose-Einstein condensate in the presence of strong interactions. The resulting many-body correlations are shown to have profo…
Critical slowdown of non-equilibrium polaron dynamics
Kristian Knakkergaard Nielsen, Luis A. Peña Ardila, Georg M. Bruun +1
We study the quantum dynamics of a single impurity following its sudden immersion into a Bose-Einstein condensate. The ensuing formation of the Bose polaron in this general setting…