Experimental Realization of a Dirac Monopole through the Decay of an Isolated Monopole

@article{Ollikainen2016ExperimentalRO,
  title={Experimental Realization of a Dirac Monopole through the Decay of an Isolated Monopole},
  author={Tuomas Ollikainen and Konstantin Tiurev and A. Blinova and W. Lee and David S. Hall and Mikko Mottonen},
  journal={Physical Review X},
  year={2016},
  volume={7},
  pages={021023}
}
Magnetic monopoles have been sought for decades but never definitively observed. Recent experiments have created different analogs of monopoles in Bose-Einstein condensates, including quantum-mechanical and Dirac monopoles. Now a new experiment in this system shows how a quantum-mechanical monopole can evolve into a Dirac monopole. 

Figures from this paper

Creation of a Dirac monopole-antimonopole pair in a spin-1 Bose-Einstein condensate

We theoretically demonstrate that a pair of Dirac monopoles with opposite synthetic charges can be created within a single spin-1 Bose-Einstein condensate by steering the spin degrees of freedom by

Topological Monopoles in Quantum Antiferromagnets

TLDR
It is shown that phonons or lattice shear strain generate topological monopoles in some low-dimensional quantum antiferromagnets, and this indicates that, even though they are not ubiquitous contrary to electrons, it is possible to get them as excitations above a background.

Magnetic Monopoles and Dark Matter

  • V. Burdyuzha
  • Physics
    Journal of Experimental and Theoretical Physics
  • 2018
Schwinger’s idea about the magnetic world of the early Universe, in which magnetic charges (monopoles) and magnetic atoms (g+g–) could be formed, is developed. In the present-day Universe magnetic

Synthetic Landau Levels and Spinor Vortex Matter on a Haldane Spherical Surface with a Magnetic Monopole.

TLDR
A flexible scheme to realize exact flat Landau levels on curved spherical geometry in a system of spinful cold atoms by applying the Floquet engineering of a magnetic quadrupole field to create a synthetic monopole field in real space is presented.

Decay of a Quantum Knot.

TLDR
The structure of the quantum knot created in the polar magnetic phase is similar to that predicted to appear in the evolution of an isolated monopole defect, suggesting a possible universality in the observed topological transition.

Theory of a superluminous vacuum quanta as the fabric of Space

Our observations of magneton with Ferrolens shows evidence pointing to such magneton entity, and more evidently in recent results with the synthetic vacuum unipole experiments. Physics formalism

Rotating Atomic Quantum Gases with Light-Induced Azimuthal Gauge Potentials and the Observation of the Hess-Fairbank Effect.

TLDR
The azimuthal gauge potentials act as effective rotations and are tunable by the Raman coupling and detuning and are exploited to demonstrate the Hess-Fairbank effect, the analogue of Meissner effect in superconductors.

Critical Spin Superflow in a Spinor Bose-Einstein Condensate.

TLDR
Another critical point for spin superflow is identified, in which transverse magnon excitations are dynamically generated via spin-exchanging collisions, which leads to the transient formation of axial polar spin domains.

Three-dimensional skyrmions in spin-2 Bose–Einstein condensates

We introduce topologically stable three-dimensional skyrmions in the cyclic and biaxial nematic phases of a spin-2 Bose–Einstein condensate. These skyrmions exhibit exceptionally high mapping degrees

Damped point-vortex model for polar-core spin vortices in a ferromagnetic spin-1 Bose-Einstein condensate

Ferromagnetic spin-1 Bose-Einstein condensates in the broken-axisymmetric phase support polar-core spin vortices (PCVs), which are intimately linked to the nonequilibrium dynamics of the system. For

References

SHOWING 1-10 OF 52 REFERENCES

Decay of an isolated monopole into a Dirac monopole

We study numerically the detailed structure and decay dynamics of isolated monopoles in conditions similar to those of their recent experimental discovery. We find that the core of a monopole in the

Evolution of an isolated monopole in a spin-1 Bose-Einstein condensate

The evolution of an isolated monopole is investigated in a ferromagnetically coupled, spin-1 Bose-Einstein condensate in the absence of external magnetic fields. It is predicted that a polar-core

Ground-State Dirac Monopole

We show theoretically that a monopole defect, analogous to the Dirac magnetic monopole, may exist as the ground state of a dilute spin-1 Bose-Einstein condensate. The ground-state monopole is not

Creation of Dirac monopoles in spinor Bose-Einstein condensates.

TLDR
It is demonstrated theoretically that, by using external magnetic fields, one can imprint pointlike topological defects on the spin texture of a dilute Bose-Einstein condensate, providing an ideal analogue to the monopole studied by Dirac.

Dirac monopoles and dipoles in ferromagnetic spinor Bose-Einstein condensates

We investigate a radial spin hedgehog, analogous to the Dirac monopole, in an optically trapped atomic spin-1 Bose-Einstein condensate. By joining together a monopole-antimonopole pair, we may form a

Observation of Dirac monopoles in a synthetic magnetic field

TLDR
These real-space images provide conclusive and long-awaited experimental evidence of the existence of Dirac monopoles, and provides an unprecedented opportunity to observe and manipulate these quantum mechanical entities in a controlled environment.

Monopoles in an antiferromagnetic Bose-Einstein condensate.

We show that even in three dimensions an antiferromagnetic spin-1 Bose-Einstein condensate, which can, for instance, be created with (23)Na atoms in an optical trap, has not only singular linelike

Observation of isolated monopoles in a quantum field

TLDR
An analog of the magnetic monopole has been created and observed in an ultracold gas of rubidium-87 atoms, and these observations lay the foundation for experimental studies of the dynamics and stability of topological point defects in quantum systems.

Dynamical instability of a doubly quantized vortex in a Bose-Einstein condensate.

TLDR
Doubly quantized vortices were topologically imprinted in /F=1> 23Na condensates, and their time evolution was observed using a tomographic imaging technique and characterized and attributed to dynamical instability.

Creation of topological states in spinor condensates

We present a simple scheme for generating topological phase states such as dark soliton and vortex states of a spinor Bose-Einstein condensate using applied magnetic fields. The realization of
...