Ground-state properties of one-dimensional anyon gases

Abstract

We investigate the ground state of the one-dimensional interacting anyonic system based on the exact Bethe ansatz solution for arbitrary coupling constant ($0\le c\le \infty$) and statistics parameter ($0\le \kappa \le \pi$). It is shown that the density of state in quasi-momentum $k$ space and the ground state energy are determined by the renormalized coupling constant $c^{\prime }$. The effect induced by the statistics parameter $\kappa$ exhibits in the momentum distribution in two aspects: Besides the effect of renormalized coupling, the anyonic statistics results in the nonsymmetric momentum distribution when the statistics parameter $\kappa$ deviates from 0 (Bose statistics) and $\pi$ (Fermi statistics) for any coupling constant $c$. The momentum distribution evolves from a Bose distribution to a Fermi one as $\kappa$ varies from 0 to $\pi$. The asymmetric momentum distribution comes from the contribution of the imaginary part of the non-diagonal element of reduced density matrix, which is an odd function of $\kappa$. The peak at positive momentum will shift to negative momentum if $\kappa$ is negative.

6 pages, 5 figures, published version in Phys. Rev. A

References in corpus (5)

• Realization of a Laughlin quasiparticle interferometer: Observation of fractional statistics
• Anyonic interferometry and protected memories in atomic spin lattices
• Correlation functions of one-dimensional anyonic fluids
• Ground-state properties of few-Boson system in a one-dimensional hard wall potential with split
• One-dimensional fermionic gases with attractive p-wave interaction in a hard-wall trap