552 citations · 2k across the 34 of their papers we have counts for
34 papers
The Beliaev Broken Symmetry Description of Superfluidity vs the Classical-Field Approach
Allan Griffin, Eugene Zaremba
The standard theoretical basis for understanding superfluidity in Bose systems was formulated by Beliaev in 1957, based on splitting the quantum field operator into a macroscopical…
Single-Particle Spectral Density of a Bose Gas in the Two-Fluid Hydrodynamic Regime
Emiko Arahata, Tetsuro Nikuni, Allan Griffin
In Bose supefluids, the single-particle Green's function can be directly related to the superfluid velocity-velocity correlation function in the hydrodynamic regime. An explicit ex…
Second sound and the density response function in uniform superfluid atomic gases
H. Hu, E. Taylor, X. -J. Liu +2
Recently there has been renewed interest in second sound in superfluid Bose and Fermi gases. By using two-fluid hydrodynamic theory, we review the density response $χ_{nn}(\bq,ω)$…
Variational theory of two-fluid hydrodynamic modes at unitarity
Edward Taylor, Hui Hu, Xia-Ji Liu +1
We present the results of a variational calculation of the frequencies of the low-lying Landau two-fluid hydrodynamic modes in a trapped Fermi superfluid gas at unitarity. Landau's…
Probing two-fluid hydrodynamics in a trapped Fermi superfluid at unitarity
Edward Taylor, Hui Hu, Xia-Ji Liu +1
We develop a variational approach to calculate the density response function at finite temperatures of the lowest-lying two-fluid modes in a trapped two-component Fermi superfluid…
Spin-polarized Fermi superfluids as Bose-Fermi mixtures
E. Taylor, A. Griffin, Y. Ohashi
In the strong-coupling BEC region where a Feshbach resonance gives rise to tightly-bound dimer molecules, we show that a spin-polarized Fermi superfluid reduces to a simple Bose-Fe…