Two-dimensional bright solitons in dipolar Bose-Einstein condensates

TL;DR

This paper investigates the existence, stability, and interactions of two-dimensional bright solitons in dipolar Bose-Einstein condensates, highlighting their unique properties compared to short-range interacting gases.

Contribution

It provides a theoretical analysis of the conditions for stable 2D bright solitons in dipolar BECs and explores their inelastic scattering behavior.

Findings

Stable 2D bright solitons require specific dipolar interaction conditions.

Scattering of these solitons is inelastic, potentially leading to fusion.

Experimental observability of these solitons is discussed.

Abstract

We analyze the physics of bright solitons in two-dimensional dipolar Bose-Einstein condensates. These solitons are not possible in short-range interacting gases. In particular, we discuss the necessary conditions for the existence of stable 2D bright solitary waves. The stability of the solutions is studied by means of the analysis of lowest-lying excitations. Additionally, we study the scattering of solitary waves, which contrary to the contact-interacting case, is inelastic, and could lead to fusion of solitary waves. Finally, the experimental possibilities for observability are discussed.