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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Use of Time-Dependent Multispectral Representation of Magnetic Barkhausen Noise Signals for the Needs of Non-Destructive Evaluation of Steel Materials
Michal Maciusowicz,Grzegorz Psuj +1 more
TL;DR: The wide analysis of BN TF representation was carried out and the Short-Time Fourier Transform (STFT) was used and a procedure for definition of the envelopes of the TF characteristic was proposed.
Journal ArticleDOI
On the accuracy of FFT based magnetostatic field evaluation schemes in micromagnetic hysteresis modeling
TL;DR: In this paper, two FFT schemes are compared to evaluate the magnetostatic field directly starting from the magnetization and have a large accuracy, while in the second scheme the magnetic potential is derived from the scalar magnetic potential, resulting in a reduced accuracy but also in a CPU time reduction for a magnetic field evaluation to 65% and a reduction of memory requirements to 55%.
Journal ArticleDOI
Antiphase boundaries, magnetic domains, and magnetic vortices in Ni-Mn-Ga single crystals
TL;DR: In this paper, the interplay between antiphase boundaries, magnetic domain structure and functional properties was investigated in the martensitic state of Ni-Mn-Ga single crystals which showed magnetically induced martensite reorientation (MIR) with 6% strain.
Journal ArticleDOI
Layered antiferromagnetic spin structures of expanded face-centered-tetragonal Mn(001) as an origin of exchange bias coupling to the magnetic Co layer
Pin-Jui Hsu,Chun-I Lu,Yu Hsun Chu,Bo-Yao Wang,Chii Bin Wu,Lun Jia Chen,Sheng Syun Wong,Minn-Tsong Lin,Minn-Tsong Lin +8 more
TL;DR: In this article, the spin structures of an exchange-coupled-bilayer system of expanded-face-centered-tetragonal (e-fct) Mn(001) ultrathin films grown on Co/Cu(001), were resolved by means of spin-polarized scanning-tunneling microscopy.
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Identification of different processes in magnetization dynamics of API steels using magnetic Barkhausen noise
TL;DR: In this article, the angular dependence of the magnetic Barkhausen noise energy was used to identify three different processes in magnetization dynamics using angular dependence on the magneto-crystalline energy of the material.
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.
Book
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TL;DR: In this article, the authors present a survey of the history of classical and modern manifold geometry, from classical to modern, including linear and almost complex structures, and the Arnold conjecture of the group of symplectomorphisms.
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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.
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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.