• Publications
  • Influence
Vortices
  • T. Simula
  • Physics
    Quantised Vortices
  • 1 July 2019
I discuss in these lectures vortex-like classical solutions to the equations of motion of gauge theories with spontaneous symmetry breaking. Starting from the Nielsen-Olesen ansatz for the Abelian
Evolution of large-scale flow from turbulence in a two-dimensional superfluid
TLDR
Experimental confirmation of Lars Onsager’s model of turbulent flow of quantized vortices is reported, opening a pathway for quantitative studies of emergent structures in interacting quantum systems driven far from equilibrium.
Emergence of order from turbulence in an isolated planar superfluid.
TLDR
This work demonstrates that after a period of vortex annihilation the remaining vortices self-organize into two macroscopic coherent "Onsager vortex" clusters that are stable indefinitely--despite the absence of driving or external dissipation in the dynamics.
Introduction to topological quantum computation with non-Abelian anyons
TLDR
This work aims to provide a pedagogical, self-contained, review of topological quantum computation with Fibonacci anyons, from the braiding statistics and matrices to the layout of such a computer and the compiling of braids to perform specific operations.
Observations on sound propagation in rapidly rotating Bose-Einstein condensates.
Repulsive laser potential pulses applied to vortex lattices of rapidly rotating Bose-Einstein condensates create propagating density waves which we have observed experimentally and modeled
Vortex mass in a superfluid
We consider the inertial mass of a vortex in a superfluid. We obtain a vortex mass that is well defined and is determined microscopically and self-consistently by the elementary excitation energy of
Kelvin waves of quantized vortex lines in trapped Bose-Einstein condensates.
TLDR
A modified Kelvin wave dispersion relation for trapped superfluids is presented and a simple method to excite Kelvin waves of specific wave number is proposed.
Thermal activation of vortex-antivortex pairs in quasi-two-dimensional Bose-Einstein condensates.
Here we show, by performing ab initio classical field simulations that two distinct superfluid phases, separated by thermal vortex-antivortex pair creation, exist in experimentally producible
Giant vortex lattice deformations in rapidly rotating bose-einstein condensates.
TLDR
A mechanism which quantitatively explains the observed core oscillation phenomenon is provided, and the clear distinction between the mechanism of atom removal and a repulsive pinning potential in creating giant vortices is demonstrated.
Onsager vortex formation in Bose-Einstein condensates in two-dimensional power-law traps
We study computationally dynamics of quantised vortices in two-dimensional superfluid Bose-Einstein condensates confined in highly oblate power-law traps. We have found that the formation of large
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