A new paper highlighting the Hub's research has been published in the American Physical Society’s Physical Review Letters (PRL) journal.
Abstract: Spin-charge separation (SCS) is a striking manifestation of strong correlations in low-dimensional quantum systems, whereby a fermion splits into separate spin and charge excitations that travel at different speeds. Here, we demonstrate that periodic driving enables control over SCS in a Hubbard system near half filling. In one dimension, we predict analytically an exotic regime where charge travels slower than spin and can even become “frozen,” in agreement with numerical calculations. In two dimensions, the driving slows both charge and spin and leads to complex interferences between single-particle and pair-hopping processes.
The authors are Hongmin Gao, Jonathan R. Coulthard, Dieter Jaksch, and Jordi Mur-Petit. You can see the paper here (subscription required).