Synthetic gauge fields in synthetic dimensions: interactions and chiral edge modes. (11th March 2016)

• Record Type: Journal Article
• Authors: Barbarino, Simone; Taddia, Luca; Rossini, Davide; Mazza, Leonardo; Fazio, Rosario
• Is Part Of: New journal of physics. Volume 18:Number 3(2016:Mar.)
• Publication Date: 2016-03-11
• Subjects: synthetic gauge fields -- synthetic dimension -- alkaline-earth(-like) atoms -- interactions and nonlinear effects -- density-matrix renormalization group and matrix-product states; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/18/3/035010
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: Synthetic ladders realized with one-dimensional alkaline-earth(-like) fermionic gases and subject to a gauge field represent a promising environment for the investigation of quantum Hall physics with ultracold atoms. Using density-matrix renormalization group calculations, we study how the quantum Hall-like chiral edge currents are affected by repulsive atom–atom interactions. We relate the properties of such currents to the asymmetry of the spin resolved momentum distribution function, a quantity which is easily addressable in state-of-art experiments. We show that repulsive interactions significantly enhance the chiral currents. Our numerical simulations are performed for atoms with two and three internal spin states.