44 citations · 91 across the 9 of their papers we have counts for
9 papers
Exciton interacting with the phonons of an electronic Wigner crystal
Jens Havgaard Nyhegn, Esben Rohan Christensen, Georg M. Bruun
With the advent of atomically thin and tunable van der Waals materials, a two-dimensional electronic Wigner crystal has recently been observed. The smoking gun signal was the appea…
Microscopic theory of polariton-polariton interactions
Esben R. Christensen, Arturo Camacho-Guardian, Ovidiu Cotlet +4
We develop a comprehensive theoretical model for the interaction strength between a pair of exciton-polaritons in microcavity devices. Ab initio numerical calculations for dipolar…
Three-body continuum states and Efimov physics in non-integer geometry
E. Garrido, E. R. Christensen, A. S. Jensen
Continuum structures of three short-range interacting particles in a deformed external one-body field are investigated. We use the equivalent -method employing non-integer dimen…
Two-body continuum states in non-integer geometry
Esben Rohan Christensen, Eduardo Garrido, Aksel Stenholm Jensen
Wave functions, phase shifts and corresponding elastic cross sections are investigated for two short-range interacting particles in a deformed external oscillator field. For this w…
A mobile ion in a Fermi sea
Esben Rohan Christensen, Arturo Camacho-Guardian, Georg M. Bruun
The remarkable single particle control of individual ions combined with the versatility of ultracold atomic gases makes hybrid ion-atom system an exciting new platform for quantum…
Charged polarons and molecules in a Bose-Einstein Condensate
Esben Rohan Christensen, Arturo Camacho-Guardian, Georg M. Bruun
We investigate the properties a mobile ion immersed in a Bose-Einstein condensate (BEC) using different theoretical approaches. A coherent state variational ansatz predicts that th…