Magnetic Domains
TLDR
In this paper, a Nahm transform has been discovered for magnetic bags, which are conjectured to arise in the large n limit of magnetic monopoles with charge n, and they are interpreted using string theory and presented some partial proofs of this conjecture.Abstract:
Recently a Nahm transform has been discovered for magnetic bags, which are conjectured to arise in the large n limit of magnetic monopoles with charge n We interpret these ideas using string theory and present some partial proofs of this conjecture We then extend the notion of bags and their Nahm transform to higher gauge theories and arbitrary domains Bags in four dimensions conjecturally describe the large n limit of n self-dual strings We show that the corresponding Basu-Harvey equation is the large n limit of an equation describing n M2-branes, and that it has a natural interpretation in loop space We also formulate our Nahm equations using strong homotopy Lie algebrasread more
Citations
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Journal ArticleDOI
Magnetic force microscopy reveals meta-stable magnetic domain states that prevent reliable absolute palaeointensity experiments
TL;DR: Induced changes in magnetic domain state directly are shown by imaging the domain configurations of titanomagnetite particles in samples that systematically fail to produce truthful estimates, qualitatively explaining reported underestimates from otherwise successful experiments.
Journal ArticleDOI
Properties of barium hexa-ferrite thin films dependent on sputtering pressure
TL;DR: In this article, M-type barium ferrite thin films were deposited onto sapphire (0.0 l) substrates by radio frequency magnetron sputtering, and an ultra-thin layer about 20nm was deposited and annealed before continuous deposition of the films up to 500nm under different sputtering pressures.
Journal ArticleDOI
Determination of magnetic flux density at the nanometer-scale antiphase boundary in Heusler alloy Ni50Mn25Al12.5Ga12.5
Yasukazu Murakami,Keiichi Yanagisawa,Kodai Niitsu,Hyun Soon Park,T. Matsuda,Ryosuke Kainuma,Daisuke Shindo,Akira Tonomura,Akira Tonomura +8 more
TL;DR: In this article, electron holography was used to obtain magnetic information from the narrow APB region in a Heusler alloy Ni 50 Mn 25 Al 12.5 Ga12.5.
Book ChapterDOI
Competing Interactions in Patterned and Self-Assembled Magnetic Nanostructures
TL;DR: In this paper, the static properties of different nanomagnetic systems are described, which have one thread in common: they consist of arrays of structures each containing a macrospin or a magnetic dipole interacting with its neighbors.
Magnetogalvanic effects in ferromagnets of reduced dimensions
TL;DR: In this paper, the magnetic microstructure of domain walls located at the bend of soft magnetic V-shaped nanowires were observed by means of scanning electron microscopy with polarization analysis (SEMPA).
References
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N=6 superconformal Chern-Simons-matter theories, M2-branes and their gravity duals
TL;DR: In this paper, the authors constructed three dimensional Chern-Simons-matter theories with gauge groups U(N) × U(n) and SU(N), SU(2) × SU (2) which have explicit = 6 superconformal symmetry.
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Dusa McDuff,Dietmar Salamon +1 more
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Gauge symmetry and supersymmetry of multiple M2-branes
Jonathan Bagger,Neil Lambert +1 more
TL;DR: In this article, a supersymmetric field theory model for multiple M2-branes based on an algebra with a totally antisymmetric triple product is proposed. But the field is not dynamical.
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Dielectric-Branes
TL;DR: In this paper, the authors extend the usual action for a Dp-brane to the case of N coincident Dpbranes where the world-volume theory involves a U(N) gauge theory.
Journal ArticleDOI
Type iib superstrings, bps monopoles, and three-dimensional gauge dynamics
Amihay Hanany,Edward Witten +1 more
TL;DR: In this article, the Coulomb branch of certain three-dimensional supersymmetric gauge theories and the moduli spaces of magnetic monopoles are explained via string theory, and new phase transitions in three dimensions as well as new infrared fixed points and even new coupling constants are predicted from the string theory construction.