487 citations · 6.8k across the 143 of their papers we have counts for
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Exciton interacting with a moiré lattice: Polarons, strings, and optical probing of spin correlations
Aleksi Julku, Shanshan Ding, Georg M. Bruun
We develop a general theory for how an exciton in an atomically thin transition metal dichacogenide (TMD) monolayer couples to spin and charge correlations in an adjacent moire lat…
Quantum beat spectroscopy of repulsive Bose polarons
A. M. Morgen, S. S. Balling, K. Knakkergaard Nielsen +3
The physics of impurities in a bosonic quantum environment is a paradigmatic and challenging many-body problem that remains to be understood in its full complexity. Here, this prob…
Strongly interacting Bose-Fermi mixture: mediated interaction, phase diagram and sound propagation
Xin Shen, Nir Davidson, Georg M. Bruun +2
Motivated by recent surprising experimental findings, we develop a strong-coupling theory for Bose-Fermi mixtures capable of treating resonant inter-species interactions while sati…
Mediated interactions between Fermi polarons and the role of impurity quantum statistics
Cosetta Baroni, Bo Huang, Isabella Fritsche +7
The notion of quasi-particles is essential for understanding the behaviour of complex many-body systems. A prototypical example of a quasi-particle, a polaron, is an impurity stron…
Wave function and spatial structure of polarons in an antiferromagnetic bilayer
Jens H. Nyhegn, Georg M. Bruun, Kristian K. Nielsen
Adding a dopant to an antiferromagnetic spin background disturbs the magnetic order and leads to the formation of a quasiparticle coined the magnetic polaron, which plays a central…
Polarons and bipolarons in a two-dimensional square lattice
Shanshan Ding, G. A. Domínguez-Castro, Aleksi Julku +2
Quasiparticles and their interactions are a key part of our understanding of quantum many-body systems. Quantum simulation experiments with cold atoms have in recent years advanced…