Viewpoint: Theory for 1D Quantum Materials Tested with Cold Atoms and Superconductors
Quantum physics in one spatial dimension is peculiar and remarkably rich, yet even with strong interactions and disorder, surprisingly tractable. This is due to the fact that the low-energy physics of nearly all 1D systems can be cast in terms of the Luttinger liquid, a key concept that parallels that of the Fermi liquid in higher dimensions. Experimental results from the Superconducting Device Laboratory at UNSW, led by Prof. Tim Duty, strongly confirm Luttinger liquid behaviour in nano-structured superconducting junction chains, and validate the quantum many-body theory of one-dimensional disordered systems. This work has important implications for the proposed use of such device as a fundamental current standard.
This research was supported by the Australian Research Council Centre of Excellence for Engineered Systems (EQuS),
A Physics Viewpoint article by Thierry Giamarchi can be found at this link
Physics World Article