2018/11/17 by Dog̃a Murat Kürkçüog̃lu, Kurkcuoglu, Doga Murat, C. A. R. Sá de Melo +1
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Quantum Gases (cond-mat.quant-gas) #Quantum, superfluid, helium dynamics
paper · pdf · doi:10.48550/arxiv.1811.07272
openalex publication_date 2018/11/17 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28
We describe the emergence of color superfluidity in ultra-cold fermions\ninduced by color-orbit and color-flip fields that transform a conventional\nsinglet-pairing s-wave system into an unconventional non-s-wave superfluid with\nquintuplet pairing. We show that the tuning of interactions, color-orbit and\ncolor-flip fields transforms a momentum-independent scalar order parameter into\nan explicitly momentum-dependent tensor order parameter. We classify all\nunconventional superfluid phases in terms of the it loci of zeros of their\nquasi-particle excitation spectrum in momentum space and we identify several\nLifshitz-type topological transitions. Furthermore, when boundaries between\nphases are crossed, non-analyticities in the compressibility arise. We find a\nquintuple point, which is also pentacritical, where four gapless superfluid\nphases converge into a fully gapped superfluid phase.\n