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Scanning SQUID Study of Vortex Manipulation by Local Contact

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Published on: February 1, 2017

Vortex dynamics in cubic-quintic Bose-Einstein condensates.

T Mithun¹, K Porsezian, Bishwajyoti Dey

¹Department of Physics, Pondicherry University, Puducherry 605014, India.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|August 16, 2013

Summary

This summary is machine-generated.

We investigated vortex dynamics in Bose-Einstein condensates, finding that higher rotational frequencies and stronger three-body interactions accelerate vortex formation. Three-body interactions also enable vortex lattice formation with attractive two-body interactions.

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Area of Science:

Atomic, Molecular, and Optical Physics
Quantum Mechanics
Condensed Matter Physics

Background:

Bose-Einstein condensates (BECs) exhibit complex quantum phenomena, including vortex dynamics.
Tunable interactions, specifically two- and three-body interactions, significantly influence BEC behavior.
Understanding vortex formation and lattice structures is crucial for controlling quantum systems.

Purpose of the Study:

To investigate the dynamics of vortices in trapped Bose-Einstein condensates with tunable interactions.
To analyze the influence of rotational frequency and three-body interactions on vortex formation.
To explore the role of three-body interactions in Bose-Einstein condensate vortex lattice formation.

Main Methods:

Governing dynamics using the two-dimensional cubic-quintic Gross-Pitaevskii equation.
Analytical derivation of critical rotational and surface mode frequencies via time-dependent variational methods.
Numerical simulations employing imaginary time propagation and the Crank-Nicolson scheme.

Main Results:

Vortex formation accelerates with increasing rotational frequency and repulsive three-body interaction strength.
Three-body interactions facilitate vortex lattice formation by inducing condensate shape deformations.
Vortex lattice formation is achievable with attractive two-body interactions and in purely quintic BECs due to three-body interactions.

Conclusions:

The study provides a comprehensive analysis of vortex dynamics in tunable Bose-Einstein condensates.
Three-body interactions play a critical role in accelerating vortex formation and enabling lattice structures.
Findings offer insights into controlling quantum states and phenomena in ultracold atomic gases.