Results 21 to 30 of about 548,689 (195)

On a sharp Poincaré-type inequality on the 2-sphere and its application in micromagnetics

open access: yes, 2019
The main aim of this note is to prove a sharp Poincaré-type inequality for vector-valued functions on the 2-sphere, that naturally emerges in the context of micromagnetics of spherical thin ...
Zarnescu, Arghir   +2 more
core   +4 more sources

Poincaré Beams at the Tight Focus: Inseparability, Radial Spin Hall Effect, and Reverse Energy Flow

open access: yesPhotonics, 2022
The family of Poincaré beams has three parameters, including two real-valued angular parameters, which specify a definite polarization state on the Poincaré sphere, and a third integer parameter n specifying the beam singularity order.
Victor V. Kotlyar   +3 more
doaj   +1 more source

Geometrical representation of a monochromatic electromagnetic wave using the tangential vector approach

open access: yesJournal of Telecommunications and Information Technology, 2001
The aim of this work is to develop a coherent polarimetric model and to find a geometrical description of a monochromatic wave. The spinor form of the electrical field, its links to the coherency matrix and the Poincare` sphere are introduced with the ...
Laura Carrea, Gerd Wanielik
doaj   +1 more source

Heart Rate Variability Features as Predictors of Intermittent Theta‐Burst Stimulation Response in Posttraumatic Stress Disorder

open access: yesNeuromodulation: Technology at the Neural Interface, EarlyView., 2021
Abstract Background Posttraumatic stress disorder (PTSD) is associated with autonomic dysfunction as indicated by deficits in the sympathetic and parasympathetic nervous systems. These abnormalities are expressed as elevated heart rate and reduced heart rate variability (HRV), respectively.
Camila Cosmo   +4 more
wiley   +1 more source

Massive spinning bosons on the celestial sphere

open access: yesJournal of High Energy Physics, 2020
A natural extension of the Pasterski-Shao-Strominger (PSS) prescription is described, enabling the map of Minkowski space amplitudes with massive spinning external legs to the celestial sphere to be performed. An integral representation for the conformal
Y. T. Albert Law, Michael Zlotnikov
doaj   +1 more source

Exploration of CPT violation via time-dependent geometric quantities embedded in neutrino oscillation through fluctuating matter

open access: yesNuclear Physics B, 2017
We propose a new approach to explore CPT violation of neutrino oscillations through a fluctuating matter based on time-dependent geometric quantities. By mapping the neutrino oscillations onto a Poincaré sphere structure, we obtain an analytic solution ...
Zisheng Wang, Hui Pan
doaj   +1 more source

Polarimetric Quantum-Strong Correlations with Independent Photons on the Poincaré Sphere

open access: yesQuantum Beam Science, 2022
Controllable, quantum-strong correlations of polarization states can be implemented with multi-photon independent states. Polarization-based photonic quantum correlations can be traced back to the overlap of the polarization Stokes vectors on the ...
Andre Vatarescu
doaj   +1 more source

Structure and Function of a Multi‐Megadalton Virus‐Like Proteolytic Dodecahedron

open access: yesAngewandte Chemie, EarlyView.
Zuzalysin, a virulence metallopeptidase of the periodontal pathogen Porphyromonas gingivalis, is secreted as a latent, flexible ≈95‐kDa monomer. Calcium triggers cysteine‐switch activation and hierarchical assembly into pentamers, bipentamers, tripentamers, and a ≈5.6‐MDa, ≈355‐Å dodecahedron. Structures at 1.8–3.6 Å reveal a virus‐sized catalytic cage
Mariusz Madej   +20 more
wiley   +2 more sources

Stress Direction Measurement Based on Polarization State in Optical Fibers Using the Quaternion Method

open access: yesIEEE Photonics Journal, 2017
The state of polarization (SOP) in a polarization-maintaining fiber subjected to external stress is studied using the quaternion method. The stress principal axis on the Poincare sphere is independent of intrinsic birefringence, but has a linear ...
Zejia Huang, Chongqing Wu, Zhi Wang
doaj   +1 more source

Magnetic X‐ray techniques

open access: yesMajor Reference Works, Page 169-176., 2023
International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.

Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
Gerrit van der Laan C. Chantler   +2 more
wiley  

+1 more source

Home - About - Disclaimer - Privacy