Results 101 to 110 of about 21,702 (292)

The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact Operators

open access: yesAbstract and Applied Analysis, 2007
The concept of unbounded Fredholm operators on Hilbert C*-modules over an arbitrary C*-algebra is discussed and the Atkinson theorem is generalized for bounded and unbounded Feredholm operators on Hilbert C*-modules over C*-algebras of compact operators.
A. Niknam, K. Sharifi
doaj   +1 more source

Hilbert transform: applications to atomic spectra [PDF]

open access: yes, 2015
In many areas of physics, the Kramers-Kronig relations are used to extract information about the real part of the optical response of a medium from its imaginary counterpart.
Keveaney, J.   +3 more
core   +1 more source

Quantization of Polaritons Confined in Dielectric Structures

open access: yesLaser &Photonics Reviews, EarlyView.
This study addresses the limitations of the Hopfield model of strong light‐matter coupling in the case of structured dieletrics. A method to derive quantum models in the polariton basis using Bogoliubov transformation and third quantization is introduced, demonstrating how to boost interaction strength and engineer nonlocal interactions for strongly ...
Amir Rahmani   +4 more
wiley   +1 more source

Detection and Classification of Double Line to Ground Faults in a 138 kV Six Phase Transmission Line Using Hilbert Huang Transform

open access: yesInternational Journal of Electrical Engineering and Applied Sciences, 2019
In this paper, Hilbert Huang transform based technique is introduced to detect and classify double line to ground faults in a 138 kV, 60 Hz, 68 km long six phase transmission line.
Gaurav Kapoor
doaj  

Theory of Supercritical Coupling and Generalized Bound States in the Continuum

open access: yesLaser &Photonics Reviews, EarlyView.
We develop a general theory of supercritical coupling and generalized bound states in the continuum (gBICs), revealing how interference between radiative and absorptive channels enables quality factors beyond conventional material‐loss limits. The framework unifies non‐Hermitian mode coupling, causality‐driven reactive interactions, and interference ...
Sergio Balestrieri   +3 more
wiley   +1 more source

Graph Fractional Hilbert Transform: Theory and Application

open access: yesFractal and Fractional
The graph Hilbert transform (GHT) is a key tool in constructing analytic signals and extracting envelope and phase information in graph signal processing.
Daxiang Li, Zhichao Zhang
doaj   +1 more source

Variants of the maximal double Hilbert transform [PDF]

open access: yes, 1985
We prove the boundedness on L p ( T 2 ) {L_p}({T^2}) , 1 > p > ∞
Elena Prestini
core   +1 more source

Predicting Statistical Signatures of Collective Emission in Disordered Color Center Ensembles

open access: yesLaser &Photonics Reviews, EarlyView.
We present an efficient simulation framework for modeling collective emission in disordered ensembles of quantum emitters. The low computational complexity enables large‐scale Monte Carlo simulations. Applied to SiV−${\rm SiV}^{-}$ clusters, it predicts thresholded superradiant bursts set by emitter number and quantum efficiency, as well as interaction‐
Qingyi Zhou   +4 more
wiley   +1 more source

Measurement of Phase Shift by Using a DSP [PDF]

open access: yesTransactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2009
The paper deals with design of the computer system for measurements of the phase shift between two harmonic signals using the Digital Signal Processor (DSP).
Petr KOČÍ, David FOJTÍK, Jiří TŮMA
doaj  

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