Vortex Motion Quantifies Strong Dissipation in a Holographic Superfluid

Wittmer, Paul; Schmied, Christian-Marcel; Gasenzer, Thomas; Ewerz, Carlo

doi:10.1103/physrevlett.127.101601

Cited by 19 publications

(5 citation statements)

References 95 publications

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“…This study may stimulate future research in two possible directions. First, the S2W model does not rely on empirical experimental inputs and therefore can be readily adapted for other quantum two-fluid systems, such as BECs 43 , 44 , superfluid neutron stars 7 , 8 , 45 , and gravity-mapped holographic superfluid 46 , 47 . An accurate evaluation of the mutual friction is particularly important for processes that involve rapid motion of the quantized vortices, such as vortex reconnections, and pinning and depinning of vortices on solid boundaries.…”

Section: Discussionmentioning

confidence: 99%

Imaging quantized vortex rings in superfluid helium to evaluate quantum dissipation

et al. 2023

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The motion of quantized vortices is responsible for many intriguing phenomena in diverse quantum-fluid systems. Having a theoretical model to reliably predict the vortex motion therefore promises a broad significance. But a grand challenge in developing such a model is to evaluate the dissipative force caused by thermal quasiparticles in the quantum fluids scattering off the vortex cores. Various models have been proposed, but it remains unclear which model describes reality due to the lack of comparative experimental data. Here we report a visualization study of quantized vortex rings propagating in superfluid helium. By examining how the vortex rings spontaneously decay, we provide decisive data to identify the model that best reproduces observations. This study helps to eliminate ambiguities about the dissipative force acting on vortices, which could have implications for research in various quantum-fluid systems that also involve similar forces, such as superfluid neutron stars and gravity-mapped holographic superfluids.

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Section: Discussionmentioning

confidence: 99%

Imaging quantized vortex rings in superfluid helium to evaluate quantum dissipation

et al. 2023

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“…8 to 100 hours are required to perform each run of numerical simulation on a desktop computer, depending mainly on the superfluid temperature. Methods to locate the position of vortex can be found in [64][65][66]. As our numerical simulation shows, the initial doubly quantized vortex does split into two singly quantized votices.…”

Section: Jhep05(2023)223mentioning

confidence: 99%

“…Compared to this traditional approach, holographic duality provides us a first principle description of finite temperature superfluid dynamics by the bulk hairy black hole [50,51]. Actually, much effort has been devoted to the characteristic features of vortex and its non-equilibrium dynamics through the lenses of holography [52][53][54][55][56][57][58][59][60][61][62][63][64][65][66]. The purpose of the current paper is to initiate our holographic investigation of vortex splitting by focusing on the splitting of doubly quantized vortex in the finite temperature holographic superfluid.…”

Section: Introductionmentioning

confidence: 99%

Splitting of doubly quantized vortices in holographic superfluid of finite temperature

Lan

et al. 2023

J. High Energ. Phys.

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The temperature effect on the linear instability and the splitting process of a doubly quantized vortex is studied. Using the linear perturbation theory to calculate out the quasi-normal modes of the doubly quantized vortex, we find that the imaginary part of the unstable mode increases with the temperature till some turning temperature, after which the imaginary part of the unstable mode decreases with the temperature. On the other hand, by the fully non-linear numerical simulations, we also examine the real time splitting process of the doubly quantized vortex, where not only do the split singly quantized vortex pair depart from each other, but also revolve around each other. In particular, the characteristic time scale for the splitting process is identified and its temperature dependence is found to be in good agreement with the linear instability analysis in the sense that the larger the imaginary part of the unstable mode is, the longer the splitting time is. Such a temperature effect is expected to be verified in the cold atom experiments in the near future.

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“…Compared to this traditional approach, holographic duality provides us a first principle description of finite temperature superfluid dynamics by the bulk hairy black hole [32,33]. Actually, much effort has been devoted to the characteristic features of vortex and its non-equilibrium dynamics through the lenses of holography [34][35][36][37][38][39][40][41][42][43][44][45][46][47]. The purpose of the current paper is to initiate our holographic investigation of vortex splitting by focusing on the splitting of doubly quantized vortex in the finite temperature holographic superfluid.…”

Section: Introductionmentioning

confidence: 99%

Splitting of doubly quantized vortices in holographic superfluid of finite temperature

Lan¹,

Li²,

Mo³

et al. 2023

Preprint

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The temperature effect on the linear instability and the splitting process of a doubly quantized vortex is studied. Using the linear perturbation theory to calculate out the quasi-normal modes of the doubly quantized vortex, we find that the imaginary part of the most unstable mode increases with the temperature till some turning temperature, after which the imaginary part of the most unstable mode decreases with the temperature. On the other hand, by the fully nonlinear numerical simulations, we also examine the splitting process of the doubly quantized vortex, where not only do the split singly quantized vortex pair depart from each other, but also revolve around each other. In particular, the characteristic time scale for the splitting process is identified and its temperature dependence is found to be in good agreement with the linear instability analysis in the sense that the larger the imaginary part of the most unstable is, the longer the splitting time is. Such a temperature effect is expected to be verified in the cold atom experiments in the near future.

show abstract

Vortex Motion Quantifies Strong Dissipation in a Holographic Superfluid

Cited by 19 publications

References 95 publications

Imaging quantized vortex rings in superfluid helium to evaluate quantum dissipation

Imaging quantized vortex rings in superfluid helium to evaluate quantum dissipation

Splitting of doubly quantized vortices in holographic superfluid of finite temperature

Splitting of doubly quantized vortices in holographic superfluid of finite temperature

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