Observation of Dirac monopoles in a synthetic magnetic field

@article{Ray2014ObservationOD,
  title={Observation of Dirac monopoles in a synthetic magnetic field},
  author={Michael William Ray and Emmi Ruokokoski and Saugat Kandel and Mikko M{\"o}tt{\"o}nen and David S. Hall},
  journal={Nature},
  year={2014},
  volume={505},
  pages={657-660}
}
Magnetic monopoles—particles that behave as isolated north or south magnetic poles—have been the subject of speculation since the first detailed observations of magnetism several hundred years ago. Numerous theoretical investigations and hitherto unsuccessful experimental searches have followed Dirac’s 1931 development of a theory of monopoles consistent with both quantum mechanics and the gauge invariance of the electromagnetic field. The existence of even a single Dirac magnetic monopole… 

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.

A synthetic monopole source of Kalb-Ramond field in diamond

Magnetic monopoles play a central role in areas of physics that range from electromagnetism to topological matter. String theory promotes conventional vector gauge fields of electrodynamics to tensor

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

Spin-1 topological monopoles in the parameter space of ultracold atoms

Magnetic monopole, a hypothetical elementary particle with isolated magnetic pole, is crucial for the quantization of electric charge. In recent years, analogues of magnetic monopoles, represented by

Status of Searches for Magnetic Monopoles

Searches for magnetic monopoles (s) are a fascinating interdisciplinary area with implications for fundamental theories, particle physics, astrophysics, and cosmology. The quantum theory of s, and

Controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice

TLDR
A controlled stabilisation of a robust isolated emergent monopole-like magnetically charged vertices in individual square ASI systems by application of an external magnetic field is demonstrated.

A synthetic macroscopic magnetic unipole

We demonstrate experimentally with a prototype for the first time, that an artificial emergent magnetic unipole hedgehog field in a simply connected three-dimensional domain is possible, emulating

Synthetic electromagnetic knot in a three-dimensional skyrmion

TLDR
The results reveal the versatile capabilities of synthetic electromagnetism and provide the first experimental images of topological three-dimensional skyrmions in a quantum system.

Direct Observation of the Statics and Dynamics of Emergent Magnetic Monopoles in a Chiral Magnet.

TLDR
This work observes a dramatic change in the Hall effect upon the transformation of a spin hedgehog crystal in a chiral magnet MnGe through combined measurements of magnetotransport and small-angle neutron scattering (SANS).

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
...

References

SHOWING 1-10 OF 32 REFERENCES

Magnetic monopoles in spin ice

TLDR
This work proposes that magnetic monopoles emerge in a class of exotic magnets known collectively as spin ice: the dipole moment of the underlying electronic degrees of freedom fractionalises into monopoles, which would account for a mysterious phase transition observed experimentally in spin ice in a magnetic field.

Dirac Strings and Magnetic Monopoles in the Spin Ice Dy2Ti2O7

Magnetic Monopoles Magnets come with a north and a south pole. Despite being predicted to exist, searches in astronomy and in high-energy particle physics experiments for magnetic monopoles (either

Synthetic magnetic fields for ultracold neutral atoms

TLDR
This work experimentally realizes an optically synthesized magnetic field for ultracold neutral atoms, which is evident from the appearance of vortices in the authors' Bose–Einstein condensate, and uses a spatially dependent optical coupling between internal states of the atoms, yielding a Berry’s phase sufficient to create large synthetic magnetic fields.

Theoretical and experimental status of magnetic monopoles

The Tevatron has inspired new interest in the subject of magnetic monopoles. First there was the 1998 D0 limit on the virtual production of monopoles, based on the theory of Ginzburg and

Non-Abelian magnetic monopole in a Bose-Einstein condensate.

TLDR
This work studies this monopole in a Bose-Einstein condensate of degenerate dressed states and finds that the topological charge of the pseudospin cancels the monopole charge resulting in a vanishing gauge invariant charge.

The Anomalous Hall Effect and Magnetic Monopoles in Momentum Space

TLDR
It is shown that the magnetic monopole can appear in the crystal momentum space of solids in the accessible low-energy region in the context of the anomalous Hall effect.

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.

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

Observation of a geometric Hall effect in a spinor Bose-Einstein condensate with a Skyrmion spin texture.

TLDR
The observation of a geometric Hall effect in a spinor Bose-Einstein condensate with a Skyrmion spin texture is reported, demonstrating the existence of an effective Lorentz force.

Monopoles in the rotating superfluid helium-3 A–B interface

The 3He A–B interface provides an unprecedented type of super-fluid boundary between two degenerate macroscopically coherent quantum systems which display different broken symmetries. As a