3 papers
cond-mat.quant-gas2025
Dispersion of first sound in a weakly interacting ultracold Fermi liquid
Thomas Repplinger, Songtao Huang, Yunpeng Ji +2
At low temperature, a normal gas of unpaired spin-1/2 fermions is one of the cleanest realizations of a Fermi liquid. It is described by Landau's theory, where no phenomenological…
cond-mat.quant-gas2025
Emergence of Fermi's Golden Rule in the Probing of a Quantum Many-Body System
Jianyi Chen, Songtao Huang, Yunpeng Ji +6
Fermi's Golden Rule (FGR) is one of the most impactful formulas in quantum mechanics, providing a link between easy-to-measure observables - such as transition rates - and fundamen…
cond-mat.quant-gas2024
Emergence of Sound in a Tunable Fermi Fluid
Songtao Huang, Yunpeng Ji, Thomas Repplinger +6
Landau's Fermi-liquid (FL) theory has been successful at the phenomenological description of the normal phase of many different Fermi systems. Using a dilute atomic Fermi fluid wit…