Equilibrium vortex lattices of a binary rotating atomic Bose-Einstein condensate with unequal atomic masses

TL;DR

This study numerically investigates the equilibrium vortex lattice structures in a binary rotating Bose-Einstein condensate with unequal atomic masses, revealing complex configurations influenced by rotation speed and mass ratio.

Contribution

It provides new insights into the ground-state vortex arrangements in binary BECs with different atomic masses, combining numerical simulations with analytical results.

Findings

Vortex configurations vary significantly with rotation frequency and mass ratio.

Analytical results align well with numerical simulations.

The work suggests new avenues for quantum control of binary quantum gases.

Abstract

We perform a detailed numerical study of the equilibrium ground-state structures of a binary rotating Bose-Einstein condensate with unequal atomic masses. Our results show that the ground-state distribution and its related vortex configurations are complex events that differ markedly depending strongly on the strength of rotation frequency, as well as on the ratio of atomic masses. We also discuss the structure and radius of the clouds, the number and the size of the core region of the vortices, as a function of the rotation frequency, and of the ratio of atomic masses, and the analytical results agree well with our numerical simulations. This work may open an alternate way in the quantum control of the binary rotating quantum gases with unequal atomic masses.