Effective Interactions in Quasi-One-Dimensional Dipolar Quantum Gases

TL;DR

This paper investigates effective interactions in quasi-one-dimensional dipolar quantum gases, emphasizing the importance of full 3D modeling to accurately capture nonuniversal corrections and guide experimental studies.

Contribution

It demonstrates that realistic 3D interaction potentials are essential for accurately describing q1D dipolar gases, revealing significant nonuniversal effects.

Findings

Nonuniversal corrections to 1D pseudopotential are significant.

Full 3D treatment is necessary for accurate modeling.

Results are relevant for experiments on excited states and nonequilibrium dynamics.

Abstract

Ultracold dipolar atoms and molecules provide a flexible quantum simulation platform for studying strongly interacting many-body systems. Determining microscopic Hamiltonian parameters of the simulator is crucial for it to be useful. We study effective interactions emerging in quasi-one-dimensional (q1D) dipolar quantum gases, revealing significant nonuniversal corrections to the commonly used 1D pseudopotential. We demonstrate that a full 3D treatment employing realistic interaction potentials is essential for describing the reduced-dimensional system. Our findings are particularly relevant to experiments probing excited states and nonequilibrium phenomena.