Microscopic study of static and dynamical properties of dilute one-dimensional soft bosons

Abstract

We study static properties and the dynamical structure factor of zero-temperature dilute bosons interacting via a soft-shoulder potential in one dimension. Our approach is fully microscopic and employs state-of-the-art quantum Monte Carlo and analytic continuation techniques. By increasing the interaction strength, our model reproduces the Lieb-Liniger gas, the Tonks-Girardeau and the Hard-Rods models.

8 pages, 5 figures, published on J. Low. Temp. Phys, Special Issue QFS 2016. Updated with hard-rods regime results obtained with a better initial wavefunction