New paper on spin-charge separation!

New paper on spin-charge separation!

Our paper “Spin-charge separation in a 1D Fermi gas with tunable interactions” has been accepted for publication in Science. The spatial separation of spin and charge excitations has been a hallmark of the Tomonaga-Luttinger liquid (TLL) theory for over 70 years. We are able to independently excite either the charge or the spin mode in our quasi-1D system using Bragg spectroscopy. Our work is the first to directly observe spin-charge separation as a function of interactions. The separate charge and spin sectors are clearly demonstrated by the data. We also observe non-linear effects, paving the way for further exploration of non-linear Luttinger liquids. Congratulations to our team here at Rice and our collaborators at the Chinese Academy of Sciences and SISSA (Italy). arXiv:2111.11545(2021)