Results 81 to 90 of about 12,426,629 (301)
Coupling in the Heisenberg group and its applications to gradient estimates [PDF]
Annals of Probability, 2016 We construct a non-Markovian coupling for hypoelliptic diffusions which are Brownian motions in the three-dimensional Heisenberg group. We then derive properties of this coupling such as estimates on the coupling rate, and upper and lower bounds on the ...
Sayantan Banerjee +2 more
semanticscholar +1 more source
High Performance Room Temperature Multiferroic Properties of w‐MnSe Altermagnet
Advanced Functional Materials, EarlyView.Using first‐principles calculations, for the first time the Altermagneto‐Ferroelectric Coupling Effect (AFCE) is proposed, which enables control of both electric polarization and spin splitting in the band structure due to polyhedral rotations. This uncovers robust multiferroicity in wurtzite MnSe at room temperature, offering an exciting route for ...
Djamel Bezzerga, Imran Khan, Jisang Hong
wiley +1 more source
Some properties of H\"older surfaces in the Heisenberg group [PDF]
, 2012 It is a folk conjecture that for alpha > 1/2 there is no alpha-Hoelder surface in the subRiemannian Heisenberg group. Namely, it is expected that there is no embedding from an open subset of R^2 into the Heisenberg group that is Hoelder continuous of ...
Donne, Enrico Le, Züst, Roger
core +1 more source
Central Extensions of Finite Heisenberg Groups in Cascading Quiver Gauge Theories
, 2006 Many conformal quiver gauge theories admit nonconformal generalizations. These generalizations change the rank of some of the gauge groups in a consistent way, inducing a running in the gauge couplings.
Affleck +29 more
core +1 more source
A rough calculus approach to level sets in the Heisenberg group [PDF]
Journal of the London Mathematical Society, 2016 We introduce novel equations, in the spirit of rough path theory, that parametrize level sets of intrinsically regular maps on the Heisenberg group with values in R2 .
Valentino Magnani +2 more
semanticscholar +1 more source
Advanced Materials, EarlyView.In layered magnets, the atomistic Dzyaloshinskii–Moriya interaction (DMI) depends critically not only on the orbital occupancy of the interface layer but also on the sequence of the atomic layers. The effect can be understood by analyzing the contributions of different orbitals to DMI.
Khalil Zakeri +3 more
wiley +1 more source
Watson-Crick pairing, the Heisenberg group and Milnor invariants
, 2008 We study the secondary structure of RNA determined by Watson-Crick pairing without pseudo-knots using Milnor invariants of links. We focus on the first non-trivial invariant, which we call the Heisenberg invariant.
Gadgil, Siddhartha
core +1 more source
Biharmonic S-curves according to Sabban frame in Heisenberg group Heis³
Boletim da Sociedade Paranaense de Matemática, 2013 In this paper, we study biharmonic curves accordig to Sabban frame in the Heisenberg group Heis³. We characterize the biharmonic curves in terms of their geodesic curvature and we prove that all of biharmonic curves are helices in the Heisenberg group ...
Talat Körpınar, Essin Turhan
doaj +3 more sources
Heisenberg Hausdorff Dimensionof Besicovitch Sets
Analysis and Geometry in Metric Spaces, 2014 We consider (bounded) Besicovitch sets in the Heisenberg group and prove that Lp estimates forthe Kakeya maximal function imply lower bounds for their Heisenberg Hausdorff dimension.
Venieri Laura
doaj +1 more source
Spin‐Polarized Antiferromagnets for Spintronics
Advanced Materials, EarlyView.This review highlights recent advances in anomalous and spin transport phenomena in spin‐polarized antiferromagnets. Key effects—including the anomalous Hall, Nernst, and magneto‐optical effects—are discussed across various antiferromagnetic platforms.
Zhenzhou Guo +5 more
wiley +1 more source