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The effect of noise on the Dirac phase of electron in the presence of screw dislocation is studied. An uncorrelated noise, which coincides with the nature of thermal fluctuations, is adopted. Results indicate that the Dirac phase is robust…

量子物理 · 物理学 2012-07-04 Reza Torabi

We study paraxial beam propagation parallel to the screw axis of a dislocated amorphous medium that is optically weakly inhomogeneous and isotropic. The effect of the screw dislocation on the beam's orbital angular momentum is shown to…

光学 · 物理学 2011-07-04 L. Mashhadi , M. Mehrafarin

The effect of particles that undergo strong diffusive-shock-acceleration on the stability of the accelerating shock is investigated. A two-fluid model is employed in which the accelerated particles are treated as a fluid whose effect is…

天体物理学 · 物理学 2007-05-23 M. Mond , L. O'C. Drury

The propagation of an electromagnetic wave in a medium with a screw dislocation is studied. Adopting the formalism of differential forms, it is shown that torsion is responsible for quantized modes. Moreover, it is demonstrated that the…

软凝聚态物质 · 物理学 2016-08-17 Sébastien Fumeron , Erms Pereira , Fernando Moraes

This research paper delves into the study of a non-relativistic quantum system, considering the interplay of non-inertial effects induced by a rotating frame and confinement by the Aharonov-Bohm (AB) flux field with potential in the…

量子物理 · 物理学 2023-08-31 Faizuddin Ahmed , Houcine Aounallah , Prabir Rudra

The discrete kinetic model is used to study the propagation of sound waves in system of hard-disk-like rotating stars (or vortex gases). The anomalous (negative) attenuation or amplification which is possibly due to the binary collision of…

天体物理学 · 物理学 2008-09-07 Zhu Guang Hua

Spatial dependence of the magnetic field and the superconducting current in a flux line pinned by a screw dislocation are computed. Interaction of a superconducting vortex with the chiral-symmetry breaking elastic strain of a screw…

材料科学 · 物理学 2009-11-07 Eugene M. Chudnovsky

Recent theoretical and experimental studies revealed spatiotemporal photonic, and acoustic, vortex beams in open space. The spatiotemporal vortex beams carry orbital angular momentum perpendicular to the wave propagation direction. Here, we…

介观与纳米尺度物理 · 物理学 2026-03-17 Muyang Xie , Chenchen Liu , Jian Huang , Zhenyu Wang , Xinwei Dong , Ruifang Wang

We verify the existence of scintillation enhancement by measuring the scintillation index of a beam composed of two coherent Gaussian vortex beams with $\pm 1$ topological charges propagating through thermally induced turbulence. Further…

光学 · 物理学 2021-12-14 Han-Tao Wang , Hua-Jun Zhang , Lu Zhang , Hui Lin , Ming-Yuan Ren , Yu Zhang

In this paper we study the properties of vortexes, as systems specific to the Acoustic World, using both hydrodynamic theory and the corresponding hydrodynamic Maxwell equations. According to this study, it follows that the vortex behaves…

综合物理 · 物理学 2024-05-02 Ion Simaciu , Viorel Drafta , Zoltan Borsos , Gheorghe Dumitrescu

We investigate non-inertial effects induced by a rotating frame on a non-relativistic quantum harmonic oscillator as well as of the topology associated to a screw dislocation, which corresponds to a distortion of a vertical line into a…

量子物理 · 物理学 2023-03-15 L. C. N. Santos , F. M. da Silva , C. E. Mota , V. B. Bezerra

Transient dynamics in viscoelastic fluids exhibits notable difference with their Newtonian counterpart. In this work we study the changes in the formation and decay of vortex of viscoelastic fluids due to degradation caused by shear stress.…

流体动力学 · 物理学 2023-12-29 Renzo Guido , Luis G. Sarasua , Arturo C. Marti

Using time-dependent Ginzburg-Landau theory we demonstrate that the Aharonov-Bohm (AB) effect, resulting from a Berry phase shift of the (macroscopic) wavefunction, is revealed through the dynamics of topological phase defects present in…

超导电性 · 物理学 2012-11-15 V. N. Gladilin , J. Tempere , J. T. Devreese , V. V. Moshchalkov

We report a crucial experimental test of the present models of the peak effect in weakly disordered type-II superconductors. Our results favor the scenario in which the peak effect arises from a crossover between the Larkin pinning length…

超导电性 · 物理学 2007-05-23 J. E. Berger , S. J. Smullin , W. L. Karlin , X. S. Ling , D. E. Prober

We consider an elastic medium with the distortion of a circular curve into a vertical spiral, and investigate the influence of this topological defect on the doubly anharmonic oscillator. We show that the Schr\"odinger equation for the…

量子物理 · 物理学 2018-03-12 Knut Bakke

We investigate the influence of a screw dislocation, characterized by the dislocation parameter, on the optical response of a parabolic GaAs cylindrical quantum wire under the combined effects of temperature, hydrostatic pressure, and the…

介观与纳米尺度物理 · 物理学 2026-05-13 Vinod Kumar , Shweta Kumari , Surender Pratap

We study the spin currents induced by topological screw dislocation and cosmic dispiration. By using the extended Drude model, we find that the spin dependent forces are modified by the nontrivial geometry. For the topological screw…

介观与纳米尺度物理 · 物理学 2015-11-27 Jian-hua Wang , Kai Ma , Kang Li , Hua-wei Fan

The artificial crystals for classical waves provide a good platform to explore the topological physics proposed originally in condensed matter systems. In this paper, acoustic Dirac degeneracy is realized by simply rotating the scatterers…

介观与纳米尺度物理 · 物理学 2018-01-17 Xinhua Wen , Chunyin Qiu , Jiuyang Lu , Hailong He , Manzhu Ke , Zhengyou Liu

In this paper, we investigate the influence of a screw dislocation on the energy levels and the wavefunctions of an electron confined in a two-dimensional pseudoharmonic quantum dot under the influence of an external magnetic field inside a…

介观与纳米尺度物理 · 物理学 2016-11-23 Cleverson Filgueiras , Moisés Rojas , Gilson Aciole , Edilberto O. Silva

We describe propagation of torsional elastic waves in cylindrical waveguide with wedge dislocation in the framework of geometric theory of defects. The defect changes the dispersion relation. For positive deficit angles, it increases the…

材料科学 · 物理学 2016-02-17 M. O. Katanaev
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