Excitation spectrum of a double supersolid in a trapped dipolar Bose mixture
Abstract
Dipolar Bose-Einstein condensates are excellent platforms for studying supersolidity, characterized by coexisting density modulation and superfluidity. The realization of dipolar mixtures opens intriguing new scenarios, most remarkably the possibility of realizing a double supersolid, composed of two interacting superfluids. We analyze the complex excitation spectrum of a miscible trapped dipolar Bose mixture, showing that it provides key insights about the double-supersolid regime. We show that this regime may be readily probed experimentally by monitoring the appearance of a doublet of superfluid compressional modes, linked to the different superfluid character of each component. Additionally, the dipolar supersolid mixture exhibits a nontrivial spin nature of the dipolar rotons, the Higgs excitation, and the low-lying Goldstone modes. Interestingly, the analysis of the lowest-lying modes allows for monitoring the transition of just one of the components into the incoherent-droplet regime, whereas the other remains coherent, highlighting their disparate superfluid properties.
Details
- Organisationseinheit(en)
-
Institut für Theoretische Physik
QuantumFrontiers
- Typ
- Artikel
- Journal
- Physical Review A
- Band
- 111
- ISSN
- 2469-9926
- Publikationsdatum
- 13.03.2025
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Atom- und Molekularphysik sowie Optik
- Elektronische Version(en)
-
https://doi.org/10.1103/PhysRevA.111.033310 (Zugang:
Offen
)
https://doi.org/ arXiv:2412.05215 (Zugang: Offen )
