scholarly journals WEAK COUPLING METHOD FOR TREATING THE SCATTE-RING OF ELECTRONS BY COULOMB POTENTIAL IN WEAK LASER FIELD

1990 ◽  
Vol 39 (8) ◽  
pp. 38
Author(s):  
LI JIE-PING
Keyword(s):  
Coulomb Potential ◽  
Laser Field ◽  
Weak Coupling ◽  
Coupling Method ◽  
Weak Coupling Method

EXPERIMENTAL TRACKING OF UNSTABLE ORBITS IN DRIVEN DIODE RESONATOR BY WEAK COUPLING

1996 ◽  
Vol 06 (04) ◽  
pp. 769-774 ◽  
Author(s):  
JONG CHEOL SHIN ◽  
SOOK-IL KWUN ◽  
YOUNGTAE KIM
Keyword(s):  
Feedback Control ◽  
Weak Coupling ◽  
Control Parameter ◽  
Chaotic Regime ◽  
Coupling Method ◽  
Generic Properties ◽  
Wide Range ◽  
Resonator System ◽  
Weak Coupling Method

The weak coupling method is demonstrated to stabilize and track the unstable orbits in the diode resonator system. Continuous tracking of the unstable orbits could be achieved over a wide range from the periodic down to the deep chaotic regime as the control parameter is varied continuously without changing the feedback control parameter. During the tracking of unstable orbits, hysteresis as well as switching of the attractors are observed and these are supposed to be the generic properties of continuous tracking.

A weak coupling method between the dynamics code HOST and the 3D unsteady Euler code WAVES

2001 ◽  
Vol 5 (6) ◽  
pp. 397-408 ◽  
Author(s):  
Gaëlle Servera ◽  
Philippe Beaumier ◽  
Michel Costes
Keyword(s):  
Weak Coupling ◽  
Coupling Method ◽  
Weak Coupling Method

scholarly journals Parametrization of stochastic multiscale triads

2016 ◽  
Author(s):  
Jeroen Wouters ◽  
Stamen I. Dolaptchiev ◽  
Valerio Lucarini ◽  
Ulrich Achatz
Keyword(s):  
Model Reduction ◽  
Weak Coupling ◽  
Degrees Of Freedom ◽  
Coupling Model ◽  
Linear Response Theory ◽  
Coupling Method ◽  
Scale Separation ◽  
Time Scale Separation ◽  
Weakly Coupled ◽  
Weak Coupling Method

Abstract. We discuss applications of a recently developed method for model reduction based on linear response theory of weakly coupled dynamical systems. We apply the weak coupling method to simple stochastic differential equations with slow and fast degrees of freedom. The weak coupling model reduction method results in general in a non-Markovian system, we therefore discuss the Markovianization of the system to allow for straightforward numerical integration. We compare the applied method to the equations obtained through homogenization in the limit of large time scale separation between slow and fast degrees of freedom. We numerically compare the ensemble spread from a fixed initial condition, correlation functions and exit times from a domain. The weak coupling method gives more accurate results in all test cases, albeit with a higher numerical cost.

The investigation on anomalous isotope effect coefficient of LaSrCuO superconductor

2019 ◽  
Vol 33 (31) ◽  
pp. 1950379
Author(s):  
P. Mycharoen ◽  
P. Udomsamuthirun
Keyword(s):  
Experimental Data ◽  
Critical Temperature ◽  
Temperature Dependence ◽  
Isotope Effect ◽  
Weak Coupling ◽  
Numerical Results ◽  
Coupling Method ◽  
Density Of State ◽  
Van Hove Singularity ◽  
Weak Coupling Method

In this research, the anomalous isotope effect coefficient of LaSrCuO superconductor was investigated in the weak-coupling method. The constant and van Hove singularity density of state, pseudogap, and the form of pseudogap temperature dependence on critical temperature are included in our calculation. Finally, the numerical results are shown in comparison with the experimental data of LaSrCuO superconductor. We found that the van Hove singularity density of state and the inversely relation of pseudogap temperature and critical temperature can fit well with the anomalous isotope effect coefficient data of LaSrCuO superconductor.

scholarly journals Parameterization of stochastic multiscale triads

2016 ◽  
Vol 23 (6) ◽  
pp. 435-445 ◽  
Author(s):  
Jeroen Wouters ◽  
Stamen Iankov Dolaptchiev ◽  
Valerio Lucarini ◽  
Ulrich Achatz
Keyword(s):  
Model Reduction ◽  
Weak Coupling ◽  
Degrees Of Freedom ◽  
Coupling Model ◽  
Linear Response Theory ◽  
Coupling Method ◽  
Test Cases ◽  
Weakly Coupled ◽  
Weak Coupling Method ◽  
Markovian System

Abstract. We discuss applications of a recently developed method for model reduction based on linear response theory of weakly coupled dynamical systems. We apply the weak coupling method to simple stochastic differential equations with slow and fast degrees of freedom. The weak coupling model reduction method results in general in a non-Markovian system; we therefore discuss the Markovianization of the system to allow for straightforward numerical integration. We compare the applied method to the equations obtained through homogenization in the limit of large timescale separation between slow and fast degrees of freedom. We numerically compare the ensemble spread from a fixed initial condition, correlation functions and exit times from a domain. The weak coupling method gives more accurate results in all test cases, albeit with a higher numerical cost.

scholarly journals Direct measurement of Coulomb-laser coupling

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Doron Azoury ◽  
Michael Krüger ◽  
Barry D. Bruner ◽  
Olga Smirnova ◽  
Nirit Dudovich
Keyword(s):  
Coulomb Interaction ◽  
Time Domain ◽  
Coulomb Potential ◽  
Laser Field ◽  
Large Range ◽  
Extreme Ultraviolet ◽  
Strong Field ◽  
The Time Domain ◽  
First Time ◽  
Insight Into

AbstractThe Coulomb interaction between a photoelectron and its parent ion plays an important role in a large range of light-matter interactions. In this paper we obtain a direct insight into the Coulomb interaction and resolve, for the first time, the phase accumulated by the laser-driven electron as it interacts with the Coulomb potential. Applying extreme-ultraviolet interferometry enables us to resolve this phase with attosecond precision over a large energy range. Our findings identify a strong laser-Coulomb coupling, going beyond the standard recollision picture within the strong-field framework. Transformation of the results to the time domain reveals Coulomb-induced delays of the electrons along their trajectories, which vary by tens of attoseconds with the laser field intensity.

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