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Geodesics in the Heisenberg Group

open access: yesAnalysis and Geometry in Metric Spaces, 2015
We provide a new and elementary proof for the structure of geodesics in the Heisenberg group Hn. The proof is based on a new isoperimetric inequality for closed curves in R2n.We also prove that the Carnot- Carathéodory metric is real analytic away from ...
Hajłasz Piotr, Zimmerman Scott
doaj   +3 more sources

Note on Heisenberg Characters of Heisenberg Groups

open access: yesRatio Mathematica, 2018
An irreducible character χ of a group G is called a Heisenberg character, if Kerχ ⊇ [G,[G,G]]. In this paper, the Heisenberg characters of the quaternion Heisenberg, generalized Heisenberg, polarised Heisenberg and three other types of infinite ...
Alieh Zolfi, Ali Reza Ashrafi
doaj   +2 more sources

Generation of spin-polarized hot electrons at topological insulators surfaces by scattering from collective charge excitations

open access: yesCommunications Physics, 2021
A key feature of topological insulators, such as Bi2Se3 is their protected electronic surface states where the direction of spin is locked to their momentum.
Khalil Zakeri   +2 more
doaj   +1 more source

The braided Heisenberg group [PDF]

open access: yesJournal of Mathematical Physics, 1993
The braided groups and braided matrices B(R) for the solution R of the Yang–Baxter equation associated to the quantum Heisenberg group are computed. It is also shown that a particular extension of the quantum Heisenberg group is dual to the Heisenberg universal enveloping algebra Uq(h), and this result is used to derive an action of Uq(h) on the ...
Baskerville, W. K., Majid, S.
openaire   +3 more sources

Unconventional magnonic surface and interface states in layered ferromagnets

open access: yesCommunications Physics, 2021
Magnons are the quantized spin waves, which describe the collective magnetic excitations and the long-range magnetic order in a solid. Here, the authors describe how to engineer magnonic band structures at the interface and surface of ferromagnetic ...
Khalil Zakeri, Huajun Qin, Arthur Ernst
doaj   +1 more source

Geometry of left-invariant Randers metric on the Heisenberg groups [PDF]

open access: yesArab Journal of Mathematical Sciences, 2023
Purpose – In this paper, we consider the Heisenberg groups which play a crucial role in both geometry and theoretical physics. Design/methodology/approach – In the first part, we retrieve the geometry of left-invariant Randers metrics on the Heisenberg ...
Ghodratallah Fasihi-Ramandi   +1 more
doaj   +1 more source

Gradient flow of Einstein-Maxwell theory and Reissner-Nordström black holes

open access: yesJournal of High Energy Physics, 2023
Ricci flow is a natural gradient flow of the Einstein-Hilbert action. Here we consider the analog for the Einstein-Maxwell action, which gives Ricci flow with a stress tensor contribution coupled to a Yang-Mills flow for the Maxwell field.
Davide De Biasio   +3 more
doaj   +1 more source

On Properties of the (2n+1)-Dimensional Heisenberg Lie Algebra

open access: yesJTAM (Jurnal Teori dan Aplikasi Matematika), 2020
In the present paper, we study some properties of the Heisenberg Lie algebra of dimension . The main purpose of this research is to construct a real Frobenius Lie algebra from the Heisenberg Lie algebra of dimension .
Edi Kurniadi
doaj   +1 more source

NET-(works) in arterial and venous thrombo-occlusive diseases

open access: yesFrontiers in Cardiovascular Medicine, 2023
Formation of Neutrophil Extracellular Traps (NETosis), accompanied by the release of extracellular decondensed chromatin and pro-inflammatory as well as pro-thrombotic factors, is a pivotal element in the development and progression of thrombo-occlusive ...
Monika Zdanyte   +5 more
doaj   +1 more source

Surjektifitas Pemetaan Eksponensial untuk Grup Lie Heisenberg yang Diperumum

open access: yesJambura Journal of Mathematics, 2023
The Heisenberg Lie Group is the most frequently used model for studying the representation theory of Lie groups. This Lie group is modular-noncompact and its Lie algebra is nilpotent.
Edi Kurniadi   +2 more
doaj   +1 more source

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