Speaker
Description
General relativity predicts that the curvature of spacetime induces spin rotations on a parallel transported particle. We deploy Unruh's analogue gravity picture and consider a quantised vortex embedded in a two-dimensional superfluid Bose-Einstein condensate. We show that such a vortex behaves dynamically like a charged particle with a spin in a gravitational field in a 2+1 dimensional spacetime [1-3]. The way the fermionic, split-boson, quasiparticle character of the vortex particle emerges out of bosons trapped by the vortices parallels the emergence of Majorana quasiparticles as split-fermions in the vortex cores of topological Fermi superfluids.
References
[1] Emil Génetay Johansen, Tapio Simula, Vortex spin in a superfluid, arXiv:2305.16016.
[2] E. Génetay Johansen, C. Vale, T. Simula, Quantum double structure in cold atom superfluids, AVS Quantum Sci. 5, 033201 (2023).
[3] Emil Génetay Johansen, Tapio Simula, Topological quantum computation using analog gravitational holonomy and time dilation, SciPost Phys. Core 6, 005 (2023).
Relevant publications (optional)
T. Simula, N. Kjærgaard, T. Pfau, Topological transport of a classical droplet in a lattice of time, arXiv:2403.06500.
https://arxiv.org/abs/2403.06500
Emil Génetay Johansen, Tapio Simula, Vortex spin in a superfluid, arXiv:2305.16016. https://arxiv.org/abs/2305.16016
Rama Sharma, Tapio P Simula, Andrew J Groszek, Fluctuation theorem anomaly in a point-vortex fluid, arXiv:2308.03397.
https://arxiv.org/abs/2308.03397
Short bio (50 words) or link to website
https://www.swinburne.edu.au/research/our-research/access-our-research/find-a-researcher-or-supervisor/researcher-profile/?id=tsimula
| Career stage | Professor |
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