7 papers · 1 filter
Sound propagation in striped supersolid cold gases at zero temperature
Elena Poli, Giovanni I. Martone, Sandro Stringari +1
We present a unified hydrodynamic approach for the sound propagation in the stripe phases realized in ultracold dipolar gas and spin-orbit-coupled BEC platforms at zero temperature…
Anomalous Doppler effect in two-component Bose-Einstein condensates
Tomasz ZawiÅlak, Sandro Stringari, Alessio Recati
We show that two-component Bose-Einstein condensed mixtures, in presence of a persistent current, exhibit a non trivial Doppler shift of the sound velocities. The peculiarity is du…
Angular momentum of rotating fermionic superfluids by Sagnac phonon interferometry
Marcia Frómeta Fernández, Diego Hernández Rajkov, Giulia Del Pace +5
Fermionic many-body systems provide an unrivaled arena to investigate how interactions drive the emergence of collective quantum behavior, such as macroscopic coherence and superfl…
Anomalous Doppler effect in superfluid and supersolid atomic gases
Tomasz ZawiÅlak, Marija Å indik, Sandro Stringari +1
By employing the formalism of hydrodynamics, we derive novel analytic predictions for the Doppler effect in superfluids with broken Galilean invariance and hosting persistent curre…
Superfluidity and sound propagation in disordered Bose gases
Kevin T. Geier, Jeff Maki, Alberto Biella +3
Superfluidity describes the ability of quantum matter to flow without friction. Due to its fundamental role in many transport phenomena, it is crucial to understand the robustness…
Sound, superfluidity and layer compressibility in a ring dipolar supersolid
Marija Å indik, Tomasz ZawiÅlak, Alessio Recati +1
We propose a protocol to excite the Goldstone modes of a supersolid dipolar Bose-Einstein condensed gas confined in a ring geometry. By abruptly removing an applied periodic modula…