13 papers
Learning shape resonances from the stabilization method
Daniel Kromm, Hans-Werner Hammer, Artem Volosniev
Resonances in quantum mechanics are commonly introduced as quasi-bound states embedded in the continuum, a perspective that can be conceptually challenging due to the abstract natu…
Generalized Gross-Pitaevskii Equation for 2D Bosons with Attractive Interactions
MichaÅ Suchorowski, Fabian Brauneis, Hans-Werner Hammer +2
We introduce a generalized Gross-Pitaevskii equation that provides a nonlinear framework for studying two-dimensional (2D) attractive Bose systems. Its defining feature is the loga…
Phenomenological model of decaying Bose polarons
Ragheed Alhyder, Georg M. Bruun, Thomas Pohl +2
Cold atom experiments show that a mobile impurity particle immersed in a Bose-Einstein condensate forms a well-defined quasiparticle (Bose polaron) for weak to moderate impurity-bo…
Anomalous valley Hall dynamics of exciton-polaritons
Xingzhou Chen, Yuanjun Guan, Areg Ghazaryan +6
The valley degree of freedom in atomically thin transition-metal dichalcogenides provides a natural binary index for information processing. Exciton-polaritons formed under strong…
Three-body Physics in the Impurity Limit of 39K Bose-Einstein Condensates
A. M. Morgen, S. S. Balling, M. T. Strøe +4
Loss spectroscopy is a key tool for investigating systems where important system parameters are linked to intrinsic resonant loss processes. We investigate loss processes of impuri…
Observation of Analogue Dynamic Schwinger Effect and Non-Perturbative Light Sensing in Lead Halide Perovskites
Dusan Lorenc, Artem G. Volosniev, Ayan A. Zhumekenov +5
Dielectric breakdown of physical vacuum (Schwinger effect) is the textbook demonstration of compatibility of Relativity and Quantum theory. Although observing this effect is still…