2010/12/02 by K Sadeghzadeh, Kayvan Sadeghzadeh, G M Bruun +7 · 5 citations
Materials Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Fermi Gamma-ray Space Telescope #Iron-based superconductors research #Metastability #Momentum (technical analysis) #Phase (matter) #Phase diagram #Physics of Superconductivity and Magnetism #Quasiparticle #Superfluidity #cond-mat.quant-gas
paper · pdf · doi:10.1088/1367-2630/13/5/055011
published in New Journal of Physics 13(5), 055011 (IOP Publishing) · 12 pages, 5 figures
arxiv created 2010/12/02 · openalex publication_date 2011/05/24 · arxiv updated 2015/03/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The metastability associated with the first-order transition from the normal to the superfluid phase is investigated in the phase diagram of two-component polarized Fermi gases. We begin by detailing the dominant decay processes of single quasiparticles, determining the momentum thresholds of each process and calculating their rates. This understanding is then applied to a Fermi sea of polarons, and we predict a region of metastability for the normal partially polarized phase. We propose experiments to observe the threshold of the metastable region, the interaction strength at which the quasiparticle ground state changes character, and the decay rate of polarons.