Quantum Monte Carlo study of the hardcore bosons with finite-range interactions in one-dimensional optical lattices

Using Quantum Monte Carlo algorithm, we study the quantum behaviors of the hardcore bosons with finite-range interactions in one-dimensional optical lattices, such finite-range interactions were realized in Rydberg-dressed alkali atoms loaded into optical lattices. With the choice of the hardcore boson density rho = 0.75 and finite-interaction range r(c) = 4, the ground-state of the system is expected to be degenerate due to the cluster formation. With the increase of interaction strength V/t, we find the system switches from the superfluid phase to supersolid phase and finally to CDW phase. The finite temperature effect and the finite size effect are also carefully examined. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

This study investigates the quantum behaviors of hardcore bosons with finite-range interactions in one-dimensional optical lattices using the Quantum Monte Carlo algorithm. It reveals a phase transition from superfluid to supersolid and finally to CDW phase as the interaction strength increases, while also examining the effects of finite temperature and finite size.