Supercurrents and Tunneling in Massive Many‐Vortex Necklaces and Star‐Lattices
Year: 2025
Type: article
Abstract: Recently, cold atoms mixtures have attracted broad interest due to their novel and exotic quantum effects with respect to single‐component systems. In this study, the focus is on massive many‐vortex states and their dynamics. Vortex configurations characterized by the same discrete rotational symmetry are investigated when confined within topologically nonequivalent geometries, and the relative stability properties at varying number of vortices and infilling mass are highlighted. It is numerically shown how massive many‐vortex systems, in a mixture of Bose–Einstein condensates, can host the bosonic tunneling of the infilling component both in a disordered way, with tunneling events involving two or more close vortices, or in an almost‐periodic way when the vortices are organized in persisting necklaces or star‐lattices. The purpose is to explore a variety of situations involving the interplay between the highly‐nonlinear vortex dynamics and the inter‐vortex atomic transfer, and so to better understand the conditions for the onset of Josephson supercurrents in rotating systems, or to reveal phenomena that can be of interest for a future application, e.g., in the context of atomtronics.
Source: Annalen der Physik
Authors: Alice Bellettini, Vittorio Penna
Institution: Politecnico di Torino
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,840
Funder: Politecnico di Torino
OpenAlex ID: W4414612405