Results 41 to 50 of about 7,348,255 (319)

A singular way to search for heavy resonances in missing energy events

open access: yesJournal of High Energy Physics, 2020
The phase space of visible particles in missing energy events may have singularity structures. The singularity variables are devised to capture the singularities effectively for given event topology.
Chan Beom Park
doaj   +1 more source

Singularities of the Mixed State Phase [PDF]

open access: yesPhysical Review Letters, 2002
4 pages Latex, 1 postscript figure; submitted to Physical Review Letters 12 Dec 2000; Revised on 13 August ...
openaire   +3 more sources

Orbital angular momentum and topological charge of a Gaussian beam with multiple optical vortices [PDF]

open access: yesКомпьютерная оптика, 2020
Here we study theoretically and numerically a Gaussian beam with multiple optical vortices with unitary topological charge (TC) of the same sign, located uniformly on a circle.
Alexey Andreevich Kovalev   +2 more
doaj   +1 more source

High-multipole excitations of hydrogen-like atoms by twisted photons near a phase singularity [PDF]

open access: yes, 2016
We calculate transition amplitudes and cross sections for excitation of hydrogen-like atoms by the twisted photon states, or photon states with angular momentum projection on the direction of propagation exceeding ℏ.
A. Afanasev, C. Carlson, A. Mukherjee
semanticscholar   +1 more source

Singularities and gauge theory phases, II [PDF]

open access: yesAdvances in Theoretical and Mathematical Physics, 2016
We present a simple algebraic construction of all the small resolutions for the SU(5) Weierstrass model. Each resolution corresponds to a subchamber on the Coulomb branch of the five-dimensional N=1 SU(5) gauge theory with matter fields in the fundamental and two-index antisymmetric representations.
Esole, Mboyo   +2 more
openaire   +2 more sources

Relationship Between Electrical Instability and Pumping Performance During Ventricular Tachyarrhythmia: Computational Study

open access: yesFrontiers in Physiology, 2020
There are representative electrical parameters for understanding the mechanism of reentrant waves in studies on tachyarrhythmia, namely the action potential duration (APD), dominant frequency, phase singularity, and filament.
Da Un Jeong, Ki Moo Lim
doaj   +1 more source

Influence of Fibrosis Amount and Patterns on Ventricular Arrhythmogenesis and Pumping Efficacy: Computational Study

open access: yesFrontiers in Physiology, 2021
Myocardial fibrosis is an integral component of most forms of heart failure. Clinical and computational studies have reported that spatial fibrosis pattern and fibrosis amount play a significant role in ventricular arrhythmogenicity.
Aulia Khamas Heikhmakhtiar   +3 more
doaj   +1 more source

Spectral phase singularity in a transmission-type double-layer metamaterial

open access: yes, 2020
Phase singularities are seen in optical vortex beams, which are located in a two-dimensional spatial plane. Phase singularities in optical spectra are not common, but exploiting the extreme phase behavior around the singularity point could improve ...
Zhengli Han, O. Seigo, H. Minamide
semanticscholar   +1 more source

Singularity-Robust Full-Pose Workspace Control of Space Manipulators with Non-Zero Momentum

open access: yes, 2023
 We address the end-effector full-pose tracking control problem in free-floating space manipulators, experiencing constant non-zero linear and angular momentum. The aim is to develop an output-tracking (workspace) control law free of singularities due to
Robin Chhabra (14210285)   +1 more
core   +1 more source

Generation of unconventional OAM waves by a circular array

open access: yesThe Journal of Engineering, 2019
In recent years, orbital angular momentum (OAM) waves have been applied to improve the performance of radar target detection and imaging. However, the phase singularity of conventional OAM beams and the doughnut-shaped intensity distribution will degrade
Kang Liu   +4 more
doaj   +1 more source

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