5 papers · 1 filter
Quantum impurities in finite-temperature Bose gases: Detecting vortex proliferation across the BKT and BEC transitions
Paolo Comaron, Nathan Goldman, Atac Imamoglu +1
Detecting vortices in neutral superfluids represents an outstanding experimental challenge. Using stochastic classical-field methods, we theoretically show that a quantum impurity…
Polaron formation in insulators and the key role of hole scattering processes: Band insulators, charge density waves and Mott transition
Ivan Amelio, Giacomo Mazza, Nathan Goldman
A mobile impurity immersed in a non-interacting Fermi sea is dressed by the gapless particle-hole excitations of the fermionic medium. This conventional Fermi-polaron setting is we…
Chiral polaron formation on the edge of topological quantum matter
Amit Vashisht, Ivan Amelio, Laurens Vanderstraeten +3
Immersing a mobile impurity in a quantum many-body environment can reveal fundamental properties of the background medium, hence providing a powerful probe of quantum matter. This…
Fermionization and collective excitations of 1D polariton lattices
Johannes Knörzer, RafaÅ OÅdziejewski, Puneet A. Murthy +1
We theoretically demonstrate that the hallmarks of correlation and fermionization in a one-dimensional exciton-polaritons gas can be observed with state-of-the-art technology. Our…
Polaron spectroscopy of interacting Fermi systems: insights from exact diagonalization
Ivan Amelio, Nathan Goldman
Immersing a mobile impurity into a many-body quantum system represents a theoretically intriguing and experimentally effective way of probing its properties.In this work, we study…