1 citations · 1 across the 4 of their papers we have counts for
7 papers
Speed of sound of a spin balanced Fermi gas with s- and d-wave pairings across the BCS-BEC evolution
Zlatko Koinov, Rafael Mendoza
The authors of a recent paper (PRA \textbf{87}, 013613 (2013)) argued that in fermionic systems with d-wave pairing the speed of sound is nonanalytic across the BCS-BEC crossover a…
Collective modes of a spin-orbit-coupled superfluid Fermi gas in a two-dimensional optical lattice: a comparison between the Gaussian approximation and the Bethe-Salpeter approach
Zlatko Koinov, Rafael Mendoza
A functional integral technique and a Legendre transform are used to give a systematic derivation of the Schwinger-Dyson equations for the generalized single-particle Green's funct…
Anomalous dispersion of the collective modes of an ultracold mixture in a square optical lattice
Zlatko Koinov, Shanna Pahl, Rafael Mendoza
We report numerical calculations of the collective excitation spectrum and the speed of sound of the superfluid phase of an atomic Fermi-Fermi mixture of population-imbalanced Lith…
Low-energy theory of the Nambu-Goldstone modes of an ultracold mixture in an optical lattice
Zlatko Koinov
A low-energy theory of the Nambu-Goldstone excitation spectrum and the corresponding speed of sound of an interacting Fermi mixture of Lithium-6 and Potassium-40 atoms in a two-dim…
Collective excitations of an imbalanced fermion gas in a 1D optical lattice
R. Mendoza, Mauricio Fortes, M. A. Solís
The collective excitations that minimize the Helmholtz free energy of a population-imbalanced mixture of a Li gas loaded in a quasi one-dimensional optical lattice are obtain…
Superfluidity of a spin-imbalanced Fermi gas in a three-dimensional optical lattice
Rafael Mendoza, Mauricio Fortes, M. A. Solís +1
We study fermion pairing in a population-imbalanced mixture of Li atomic gas loaded in a three-dimensional lattice at very low temperatures. Using the number equation for eac…