2006/11/09 by Bogdan Mihaila, S. Gaudio, Sergio Gaudio +3
Physics and Astronomy · #Acoustic attenuation #Attenuation #Boson #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Context (archaeology) #Fermi Gamma-ray Space Telescope #Fermion #Physics #Physics of Superconductivity and Magnetism #Quantum electrodynamics #Quantum mechanics #Quantum, superfluid, helium dynamics #Superfluidity #cond-mat.other #hep-ph #nucl-th
paper · pdf · doi:10.1103/physreva.75.013603
published as Phys.Rev.A75:013603,2007
arxiv created 2006/11/09 · openalex publication_date 2007/01/04 · arxiv updated 2014/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the acoustic attenuation rate in the Fermi-Bose model describing mixtures of bosonic and fermionic atom gases. We demonstrate the dramatic change of the acoustic attenuation rate as the fermionic component is evolved through the BEC to BCS crossover, in the context of a mean-field model applied to a finite-range fermion-fermion interaction at zero temperature, such as discussed previously by Parish et al. [Phys. Rev. B 71, 064513 (2005)] and Mihaila et al. [Phys. Rev. Lett. 95, 090402 (2005)]. The shape of the acoustic attenuation rate as a function of the boson energy represents a signature for superfluidity in the fermionic component.