News

New postdoc: Deepnarayan Biswas

2018.09.17Deepnarayan Biswas has joined the group of Søren Ulstrup on 10th September, 2018.

New professor: Thomas Tauris

2018.08.31As of 1 September, Thomas Tauris has received employment in a fixed-term position as Professor in Astrophysics

Landau’s picture of a quantum many-body system in terms of interacting composite particles.

Landau’s Effective Interaction in a Bose-Einstein Condensate

2018.08.30New paper in Phys. Rev. X by A. Camacho-Guardian and G. M. Bruun from IFA

A one dimensional cigar causes polaron behaviour to be totally different

Bi-polarons in cigar condensates

2018.08.27New paper in PRL: Two polarons squeezed inside a cigar shaped condensate behave totally different than expected.

The green balls illustrate two polarons, which bind forming a bipolaron
by exchanging sound modes (blue cloud) in the surrounding BEC

Bi-polarons in atomic Bose-Einstein condensates

2018.07.12New paper in PRL: Bi-polarons are bound states of two quasiparticles that exchange sound modes.