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The physics of a planar chiral $p\pm i p$ superconductor is studied for various vortex configurations. The occurrence of vortex quasi-particle bound states is exposed together with their ensuing collective properties, such as sub-gap bands…

超导电性 · 物理学 2018-09-26 Daniel Ariad , Yshai Avishai , Eytan Grosfeld

The interaction of vortical structures with boundaries has been extensively studied in Newtonian fluids, where conditions such as no slip walls, free surfaces, or contaminated surfaces dictate whether vortices rebound, dissipate, or…

Vortices in spin-$0$ superfluids generically carry magnetic fields inside their cores, so that even neutral superfluid vortices may be thought of as magnetic flux tubes. We give a systematic analysis of this `vortex magnetic effect' using…

量子气体 · 物理学 2022-05-02 Aleksey Cherman , Theodore Jacobson , Srimoyee Sen , Laurence G. Yaffe

We consider two coupled strongly correlated bosonic chains. We derive the phase diagram of the pure system and obtain an antisymmetric charge density wave, a 4k_F charge density wave, a superfluid phase and a second superfluid phase which…

强关联电子 · 物理学 2009-10-31 E. Orignac , T. Giamarchi

Vorticity in two-dimensional superfluids is subject to intense research efforts due to its role in quantum turbulence, dissipation and the BKT phase transition. Interaction of sound and vortices is of broad importance in Bose-Einstein…

Measurements of the energy spectrum and of the vortex-density fluctuation spectrum in superfluid turbulence seem to contradict each other. Using a numerical model, we show that at each instance of time the total vortex line density can be…

其他凝聚态物理 · 物理学 2014-11-05 Andrew W. Baggaley , Jason Laurie , Carlo F. Barenghi

Superfluid helium is an intimate mixture of a viscous normal fluid, with continuous vorticity, and an inviscid superfluid, where vorticity is constrained to thin, stable topological defects. One mechanism to generate turbulence in this…

流体动力学 · 物理学 2015-06-17 A. W. Baggaley , S. Laizet

Rotation of a container holding a viscous fluid forms a vortex which grows with increasing angular velocity. A superfluid, however, is intrinsically different from these normal fluids because its rotation is quantized. Even if a container…

The energy levels of the fermions bound to the vortex are considered for vortices in the superfluid/superconducting systems which contain the symmetry protected plane of zeroes in the gap function in bulk. The Caroli-de Gennes-Matricon…

超导电性 · 物理学 2017-09-20 G. E. Volovik

Interaction of particles of many systems can be effectively approximated by multiscale interaction potentials. Such potentials are widely used for investigation of colloidal systems and colloid-polymer mixtures, complex liquids (for…

软凝聚态物质 · 物理学 2019-02-13 Yu. D. Fomin , V. N. Ryzhov , E. N. Tsiok

The rotation of a quantum liquid induces vortices to carry angular momentum. When the system is composed of multiple components that are distinguishable from each other, vortex cores in one component may be filled by particles of the other…

介观与纳米尺度物理 · 物理学 2008-12-18 H. Saarikoski , A. Harju , J. Christensson , S. Bargi , M. Manninen , S. M. Reimann

A mechanism of a pinning of the quantized matter wave vortices by optical vortices in a specially arranged optical dipole traps is discussed. The vortex-antivortex optical arrays of rectangular symmetry are shown to transfer angular orbital…

斑图形成与孤子 · 物理学 2015-05-13 A. Yu. Okulov

Singly quantized vortices have been already observed in many systems including the superfluid helium, Bose Einstein condensates of dilute atomic gases, and condensates of exciton polaritons in the solid state. Two dimensional superfluids…

量子气体 · 物理学 2009-11-16 K. G. Lagoudakis , T. Ostatnicky , A. V. Kavokin , Y. G. Rubo , R. Andre , B. Deveaud-Pledran

This paper addresses the interaction of initially anti-parallel vortex tubes containing an axial flow that induces a twisting of the vortex lines around the tube axes, using numerical simulations. Vortex tube configurations with both the…

流体动力学 · 物理学 2019-02-13 Philip McGavin , David I. Pontin

To explain the observed decay of superfluid turbulence at very low temperature, it has been proposed that a cascade of Kelvin waves (analogous to the classical Kolmogorov cascade) transfers kinetic energy to length scales which are small…

统计力学 · 物理学 2015-05-19 Andrew W. Baggaley , Carlo F. Barenghi

The nonlinear dynamics of thermal and electromagnetic perturbations in the vortex state of type II superconductors is analyzed with account of dissipation and dispersion effects. A theoretical analysis shows that nonlinear thermal and…

超导电性 · 物理学 2007-05-23 Nizam A. Taylanov

The angular momentum of rotating superfluid droplets originates from quantized vortices and capillary waves, the interplay between which remains to be uncovered. Here, the rotation of isolated sub-micrometer superfluid 4He droplets is…

Quantum vorticity occurs in superfluidity, which arises from a spatial variation of the quantum phase. As such, it can occur in diverse systems over a wide range of scales, from the electroweak sector and QCD of the standard model of…

高能物理 - 理论 · 物理学 2015-09-01 Kerson Huang

We derive a type of kinetic equation for Kelvin waves on quantized vortex filaments with random large-scale curvature, that describes step-by-step (local) energy cascade over scales caused by 4-wave interactions. Resulting new energy…

混沌动力学 · 物理学 2015-05-14 Victor S. L'vov , Sergey Nazarenko

We present a systematic derivation of the effective action for interacting vortices in a non-relativistic two-dimensional superfluid described by the Gross-Pitaevskii equation by integrating out longitudinal fluctuations of the order…

量子气体 · 物理学 2014-11-26 Andrew Lucas , Piotr Surówka