Results 61 to 70 of about 303 (182)
Electric‐Current‐Assisted Nucleation of Zero‐Field Hopfion Rings
Advanced Materials, Volume 38, Issue 21, 13 April 2026.This work reports a novel and efficient nucleation protocol for 3D localized topological magnetic solitons‐hopfion rings in chiral magnets using pulsed electric currents. By using Lorentz transmission electron microscopy and topological analysis, we report characteristic features and extraordinary stability of hopfion rings in zero or inverted external
Xiaowen Chen +12 more
wiley +1 more source
Non-Commutative Analysis on Quantum Spaces [PDF]
, 2004 Tools like a generalized *-product, a Leibniz rule and an integration needed for Analysis on Quantum Spaces such as n-dimensional q-deformed Euclidean space are ...
Jambor, Claudia
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Generalized Heisenberg algebra and (non linear) pseudo-bosons [PDF]
Journal of Physics A: Mathematical and Theoretical, 2018 Abstract We propose a deformed version of the generalized Heisenberg algebra by using techniques borrowed from the theory of pseudo-bosons. In particular, this analysis is relevant when non self-adjoint Hamiltonians are needed to describe a given physical system. We also discuss relations with nonlinear pseudo-bosons. Several examples
F Bagarello, E M F Curado, J P Gazeau
openaire +3 more sources
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
PHASE STATES AND COHERENT STATES FOR GENERALIZED WEYL-HEISENBERG ALGEBRAS [PDF]
, 2012 6 pagesThis paper is concerned with the construction of phase operators, phase states, vector phase states, and coherent states for a generalized Weyl-Heisenberg algebra. This polynomial algebra (that depends on real parameters) is briefly described. The
Kibler, Maurice Robert, Daoud, Mohammed
core +2 more sources
Verma Modules Over the Generalized Heisenberg–Virasoro Algebra [PDF]
Communications in Algebra, 2008 For any additive subgroup G of an arbitrary field 𝔽 of characteristic zero, there corresponds a generalized Heisenberg–Virasoro algebra ℒ[G]. Given a total order of G compatible with its group structure, and any h, hI, c, cI, cLI ∈ 𝔽, a Verma module over ℒ[G] is defined.
Ran Shen, Qifen Jiang, Yucai Su
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Sublinear bilipschitz equivalence and the quasiisometric classification of solvable Lie groups
Journal of the London Mathematical Society, Volume 113, Issue 4, April 2026.Abstract We prove a product theorem for sublinear bilipschitz equivalences which generalizes the classical work of Kapovich, Kleiner, and Leeb on quasiisometries between product spaces. We employ our product theorem to distinguish up to quasiisometry certain families of solvable groups which share the same dimension, cone‐dimension and Dehn function ...
Ido Grayevsky, Gabriel Pallier
wiley +1 more source
Generalized Grassmann Algebras and its Connection to the Extended Supersymmetric Models [PDF]
, 2001 It is shown that the fermionic HeisenbergWeyl algebra with $2N=D$ fermionic generators is equivalent to the generalized Grassmann algebra with two fractional generators. The 2,3 and 4 dimensional Heisenberg Weyl algebras are explicitly given in terms of
Santillan, O P, Isaev, A P, Popowicz, Z
core
Symmetry, Integrability and Geometry: Methods and Applications, 2007 Two generalizations of Kempf's quadratic canonical commutation relation in one dimension are considered. The first one is the most general quadratic commutation relation.
Christiane Quesne, Volodymyr M. Tkachuk
doaj
Accelerating Conjugate Gradient Solvers for Homogenization Problems With Unitary Neural Operators
International Journal for Numerical Methods in Engineering, Volume 127, Issue 5, 15 March 2026.ABSTRACT Rapid and reliable solvers for parametric partial differential equations (PDEs) are needed in many scientific and engineering disciplines. For example, there is a growing demand for composites and architected materials with heterogeneous microstructures.
Julius Herb, Felix Fritzen
wiley +1 more source