Experimental realization of a dirac monopole through the decay of an isolated monopole

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Abstract

We experimentally observe the decay dynamics of deterministically created isolated monopoles in spin- 1 Bose-Einstein condensates. As the condensate undergoes a change between magnetic phases, the isolated monopole gradually evolves into a spin configuration hosting a Dirac monopole in its synthetic magnetic field. We characterize in detail the Dirac monopole by measuring the particle densities of the spin states projected along different quantization axes. Importantly, we observe the spontaneous emergence of nodal lines in the condensate density that accompany the Dirac monopole. We also demonstrate that the monopole decay accelerates in weaker magnetic field gradients.

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Ollikainen, T., Tiurev, K., Blinova, A., Lee, W., Hall, D. S., & Möttönen, M. (2017, May 17). Experimental realization of a dirac monopole through the decay of an isolated monopole. Physical Review X. American Physical Society. https://doi.org/10.1103/PhysRevX.7.021023

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