Zobrazeno 1 - 10
of 203
pro vyhledávání: '"Baggaley, Andrew"'
Autor:
Stasiak, Piotr Z., Xing, Yiming, Alihosseini, Yousef, Barenghi, Carlo F., Baggaley, Andrew, Guo, Wei, Galantucci, Luca, Krstulovic, Giorgio
The minimum separation between reconnecting vortices in fluids and superfluids obeys a universal scaling law with respect to time. The pre-reconnection and the post-reconnection prefactors of this scaling law are different, a property related to irre
Externí odkaz:
http://arxiv.org/abs/2411.08942
We simulate the dynamics of about 600 quantum vortices in a spinning-down cylindrical container using a Gross--Pitaevskii model. For the first time, we find convincing spatial-temporal evidence of avalanching behaviour resulting from vortex depinning
Externí odkaz:
http://arxiv.org/abs/2410.16878
In classical inviscid fluids, parallel vortices perturbed by Kelvin waves may exhibit the Crow instability, where the mutual interaction of the Kelvin modes renders them dynamically unstable. This results in the mutual approach and reconnection of th
Externí odkaz:
http://arxiv.org/abs/2407.04177
We present a numerical study, using the vortex filament model, of vortex tangles in a flow of pure superfluid $^4$He in the $T = 0$ limit through a channel of width $D = 1$ mm for various applied velocities $V$. The flat channel walls are assumed to
Externí odkaz:
http://arxiv.org/abs/2402.09562
Publikováno v:
Phys. Rev. A 109, 063323 (2024)
The static and dynamic properties of vortices in dipolar Bose-Einstein condensates (dBECs) can be considerably modified relative to their nondipolar counterparts by the anisotropic and long-ranged nature of the dipole-dipole interaction. Working in a
Externí odkaz:
http://arxiv.org/abs/2311.17192
We employ the Gross--Pitaevskii theory to model a quantized vortex depinning from a small obstacle in a two-dimensional superfluid due to an imposed background superfluid flow. We find that, when the flow's velocity exceeds a critical value, the vort
Externí odkaz:
http://arxiv.org/abs/2311.06664
When a two-dimensional system undergoes a rapid quench from a disordered to an ordered phase, it does not order instantly but instead relaxes towards equilibrium over time. During this relaxation, the dynamical scaling hypothesis predicts that the le
Externí odkaz:
http://arxiv.org/abs/2310.16514
Autor:
Stasiak, Piotr Z., Baggaley, Andrew W., Krstulovic, Giorgio, Barenghi, Carlo F., Galantucci, Luca
The reciprocal energy and enstrophy transfers between normal fluid and superfluid components dictate the overall dynamics of superfluid $^4$He including the generation, evolution and coupling of coherent structures, the distribution of energy among l
Externí odkaz:
http://arxiv.org/abs/2310.05826
Autor:
Golightly, Andrew, Wadkin, Laura E., Whitaker, Sam A., Baggaley, Andrew W., Parker, Nick G., Kypraios, Theodore
We consider the case of performing Bayesian inference for stochastic epidemic compartment models, using incomplete time course data consisting of incidence counts that are either the number of new infections or removals in time intervals of fixed len
Externí odkaz:
http://arxiv.org/abs/2303.15371
Autor:
Laurie, Jason, Baggaley, Andrew W.
Publikováno v:
Phys. Rev. Fluids 8, 054604 (2023)
We present a numerical study of finite-temperature superfluid turbulence using the vortex filament model for superfluid helium. We examine the phenomenon of vorticity locking between the normal and superfluid components across a wide range of tempera
Externí odkaz:
http://arxiv.org/abs/2208.12329