Dynamics of a vortex dipole in a holographic superfluid
| Autor: | Andreas Samberg, Paul Wittmer, Carlo Ewerz |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
High Energy Physics - Theory
Nuclear and High Energy Physics velocity Holography Initialization Motion (geometry) FOS: Physical sciences superfluid QC770-798 AdS-CFT Correspondence Tracking (particle physics) Gauge-gravity correspondence law.invention Superfluidity law Nuclear and particle physics. Atomic energy. Radioactivity Condensed Matter::Superconductivity ddc:530 numerical calculations Physics Dynamics (mechanics) Fluid Dynamics (physics.flu-dyn) acceleration Physics - Fluid Dynamics dimension: 3 [space-time] Vortex Holography and condensed matter physics (AdS/CMT) Dipole Classical mechanics vortex High Energy Physics - Theory (hep-th) Quantum Gases (cond-mat.quant-gas) trajectory holography Condensed Matter - Quantum Gases dipole |
| Zdroj: | Journal of High Energy Physics Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-46 (2021) Journal of high energy physics 2021(11), 199 (2021). doi:10.1007/JHEP11(2021)199 |
| DOI: | 10.1007/JHEP11(2021)199 |
| Popis: | We use holography to investigate the dynamics of a vortex-anti-vortex dipole in a strongly coupled superfluid in 2+1 dimensions. The system is evaluated in numerical real-time simulations in order to study the evolution of the vortices as they approach and eventually annihilate each other. A tracking algorithm with sub-plaquette resolution is introduced which permits a high-precision determination of the vortex trajectories. With the increased precision of the trajectories it becomes possible to directly compute the vortex velocities and accelerations. We find that in the holographic superfluid the vortices follow universal trajectories independent of their initial separation, indicating that a vortex-anti-vortex pair is fully characterized by its separation. Subtle non-universal effects in the vortex motion at early times of the evolution can be fully attributed to artifacts due to the numerical initialization of the vortices. We also study the dependence of the dynamics on the temperature of the superfluid. 46 pages |
| Databáze: | OpenAIRE |
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