On the connection between singularity structure of casual distributions and behaviour in the Bjorken limit

1974 ◽  
Vol 23 (3) ◽  
pp. 420-430 ◽  
Author(s):  
J. Kühn
Keyword(s):  
Singularity Structure ◽  
Bjorken Limit

scholarly journals On the singularity structure of Kahan discretizations of a class of quadratic vector fields

2021 ◽  
Author(s):  
René Zander
Keyword(s):  
Elliptic Curves ◽  
Vector Fields ◽  
Singularity Structure ◽  
Quadratic Vector Fields ◽  
Parameter Values

AbstractWe discuss the singularity structure of Kahan discretizations of a class of quadratic vector fields and provide a classification of the parameter values such that the corresponding Kahan map is integrable, in particular, admits an invariant pencil of elliptic curves.

Bjorken Limit and Pole Dominance. II. VirtualπρScattering

1968 ◽  
Vol 174 (5) ◽  
pp. 1786-1793 ◽  
Author(s):  
Stanley G. Brown ◽  
Geoffrey B. West
Keyword(s):  
Bjorken Limit ◽  
Pole Dominance

A novel multi-event-based control for robot bilateral tele-operation with an exoskeleton arm under time delay

2009 ◽  
Vol 223 (6) ◽  
pp. 1481-1491 ◽  
Author(s):  
J-F Zhang ◽  
C-J Yang ◽  
Y Chen
Keyword(s):  
Time Delay ◽  
Control Structure ◽  
Control Architecture ◽  
The Internet ◽  
Event Generator ◽  
Communication Failure ◽  
Operation System ◽  
Singularity Structure ◽  
Control Scheme ◽  
Event Based

A novel control architecture based on a multi-event for tele-operation with an exoskeleton arm over the internet in case of transmission delay and communication failure is proposed. In this proposed control scheme a non-time event reference s is chosen to coordinate two sites and promises synchronization of the system. In addition, more than one event generator is employed to compose the multi-event-based control structure, in which the state of the slave site and uncertainties on the master site, such as singularity of the master arm and so on, are both evaluated. Through the bilateral tele-operation experiments in case of time delay with a rigid obstacle and master arm singularity structure, this control scheme is well demonstrated. The tele-operation system has solid performance with good stability and synchronization.

scholarly journals Moduli spaces of non-geometric type II/heterotic dual pairs

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Yoan Gautier ◽  
Dan Israël
Keyword(s):  
Moduli Space ◽  
Moduli Spaces ◽  
Type Ii ◽  
Duality Group ◽  
Dual Pairs ◽  
Perturbative Correction ◽  
Singularity Structure ◽  
Four Dimensions ◽  
Geometric Type ◽  
Perturbative Corrections

Abstract We study the moduli spaces of heterotic/type II dual pairs in four dimensions with $$ \mathcal{N} $$ N = 2 supersymmetry corresponding to non-geometric Calabi-Yau backgrounds on the type II side and to T-fold compactifications on the heterotic side. The vector multiplets moduli space receives perturbative corrections in the heterotic description only, and non- perturbative correction in both descriptions. We derive explicitely the perturbative corrections to the heterotic four-dimensional prepotential, using the knowledge of its singularity structure and of the heterotic perturbative duality group. We also derive the exact hypermultiplets moduli space, that receives corrections neither in the string coupling nor in α′.

Polarized waveguide excitations in microwave ferrites: the singularity structure analysis

2021 ◽  
Author(s):  
Brice A. Kamdem ◽  
Romuald K.K. Lemoula ◽  
Victor Kamgang Kuetche ◽  
Jean J. Defo ◽  
Raïssa S. Noule ◽  
...  
Keyword(s):  
Structure Analysis ◽  
Singularity Structure
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