Observation of Massless and Massive Collective Excitations with Faraday Patterns in a Two-Component Superfluid
Year: 2022
Authors: Cominotti R.; Berti A.; Farolfi A.; Zenesini A.; Lamporesi G.; Carusotto I.; Recati A.; Ferrari G.
Autors Affiliation: Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy; Univ Trento, Trento Inst Fundamental Phys & Applicat, INFN, I-38123 Povo, Italy.
Abstract: We report on the experimental measurement of the dispersion relation of the density and spin collective excitation modes in an elongated two-component superfluid of ultracold bosonic atoms. Our parametric spectroscopic technique is based on the external modulation of the transverse confinement frequency, leading to the formation of density and spin Faraday waves. We show that the application of a coherent coupling between the two components reduces the phase symmetry and gives a finite mass to the spin modes.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 128 (21) Pages from: 210401-1 to: 210401-6
KeyWords: Faraday waves, superfluid mixture, excitation spectrumDOI: 10.1103/PhysRevLett.128.210401ImpactFactor: 8.600Citations: 21data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-09-15References taken from IsiWeb of Knowledge: (subscribers only)
