Results 11 to 20 of about 11,871 (158)
Hilltop Inflation and Generation of Helical Magnetic Field [PDF]
Universe, 2022 Primordial magnetic field generated in the inflationary era can act as a viable source for the present day intergalactic magnetic field of sufficient strength. We present a fundamental origin for such a primordial generation of the magnetic field, namely through anomaly cancellation of U(1) gauge field in quantum electrodynamics in the context of ...
Sumanta Chakraborty +2 more
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ON THE HELICITY OF OPEN MAGNETIC FIELDS [PDF]
The Astrophysical Journal, 2014 We reconsider the topological interpretation of magnetic helicity for magnetic fields in open domains, and relate this to the relative helicity. Specifically, our domains stretch between two parallel planes, and each of these ends may be magnetically open.
C. Prior, A. R. Yeates
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Evolution of field line helicity in magnetic relaxation [PDF]
Physics of Plasmas, 2021 Plasma relaxation in the presence of an initially braided magnetic field can lead to self-organization into relaxed states that retain non-trivial magnetic structure. These relaxed states may be in conflict with the linear force-free fields predicted by the classical Taylor theory, and remain to be fully understood.
A. R. Yeates +2 more
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Magnetic-Field Generation in Helical Turbulence [PDF]
Physical Review Letters, 2005 We investigate analytically the amplification of a weak magnetic field in a homogeneous and isotropic turbulent flow lacking reflectional symmetry (helical turbulence). We propose that the spectral distributions of magnetic energy and magnetic helicity can be found as eigenmodes of a self-adjoint, Schrödinger-type system of evolution equations.
Boldyrev, Stanislav +2 more
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Magnetic helicity and cosmological magnetic field [PDF]
Astronomy & Astrophysics, 2005 11 pages, no figures; v3: new references and new paragraphs added, discussion extended, some mistypings ...
Semikoz, V. B., Sokoloff, D.
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Helical magnetic self-organization of plasmas in toroidal pinches with transport barriers formation [PDF]
EPJ Web of Conferences, 2020 Nonlinear MHD modeling of toroidal pinch configurations for hot plasma magnetic confinement describes several features of the helical self-organization process, which is observed in both reversed-field pinches and tokamaks. It can also give a hint on why
Veranda Marco +5 more
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Spin Edge Helices in a Perpendicular Magnetic Field [PDF]
Physical Review Letters, 2010 We present an exact solution to the problem of the spin edge states in the presence of equal Bychkov-Rashba and Dresselhaus spin-orbit fields in a two-dimensional electron system, restricted by a hard-wall confining potential and exposed to a perpendicular magnetic field.
Badalyan, Samvel, Fabian, Jaroslav
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Advanced Science, 2021 Inspired by the movement of bacteria and other microorganisms, researchers have developed artificial helical micro‐ and nanorobots that can perform corkscrew locomotion or helical path swimming under external energy actuation.
Jiaen Wu +10 more
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Materials & Design, 2023 In this research, a magnetically driven double curved conical ribbon micro-helical robot was proposed to improve the swimming stability and swimming performance.
Yunlong Jia +4 more
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Observation of the Chiral Soliton Lattice above Room Temperature
Advanced Physics Research, 2023 Magnetic chiral soliton lattices (CSLs) emerge from the helical phase in chiral magnets when magnetic fields are applied perpendicular to the helical propagation vector, and they show great promise for next‐generation magnetic memory applications.
R. Brearton +7 more
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