Results 21 to 30 of about 747,493 (287)

Perturbation theory in a framework of iteration methods [PDF]

, 2005
In a previous paper (J. Phys. A 36, 11807 (2003)), we introduced the `asymptotic iteration method' for solving second-order homogeneous linear differential equations.
Amore, Amore, Barakat, Barrowes, Bender, Bender, Bender, Bender, Bender, Chebotarev, Chen, Ciftci, Ciftci, Cohen, Delabaere, Delabaere, des Cloiseaux, Dunster, Falloon, Fernandez, Fernandez, Fernandez, Guido, Guimaraes, Hakan Ciftci, Hatsuda, Ivanov, Ivanov, Jamastil, Janke, Li, Mezincescu, Mostafazadeh, Mustafa, Mustafa, Nasser Saad, Radmore, Richard L. Hall, Sink, Slepian, Streifer, Thompson, Znojil, Znojil, Znojil   +44 more
core   +1 more source

On the existence of bound and ground states for some coupled nonlinear Schrödinger–Korteweg–de Vries equations

Advances in Nonlinear Analysis, 2017
We show the existence of positive bound and ground states for a system of coupled nonlinear Schrödinger–Korteweg–de Vries equations. More precisely, we prove that there exists a positive radially symmetric ground state if either the coupling coefficient ...
Colorado Eduardo
doaj   +1 more source

Regularization Methods in Chiral Perturbation Theory

, 1993
Chiral lagrangians describing the interactions of Goldstone bosons in a theory possessing spontaneous symmetry breaking are effective, non-renormalizable field theories in four dimensions.
Appelquist, Appelquist, Callan, Chanowitz, Chew, Coleman, D'Ambrosio, D. Espriu, Ecker, Espriu, Espriu, Freedman, Gasser, Gasser, Georgi, Georgi, Ginzburg, Goldstone, Gounaris, Haagensen, Haagensen, Hasenfratz, Herrero, Holdom, J. Matias, Lehmann, Longhitano, Martin, Nambu, Renken, Veltman, Veltman, Weinberg, Weinberg, Weinberg, Zinn-Justin   +35 more
core   +2 more sources

Exact Separation of Purely Short-Period Effects and Mean Variations in the Main Problem of Artificial Satellite Theory

Aerospace
It is well known that mean elements obtained by canonical perturbation theory only agree partially with the average dynamics of the osculating orbit. While this fact does not necessarily compromise the accuracy of corresponding perturbation solutions ...
Martin Lara
doaj   +1 more source

Perturbation-based nonperturbative method

Annals of Physics
This paper presents a nonperturbative method for solving eigenproblems. This method applies to almost all potentials and provides nonperturbative approximations for any energy level. The method converts an eigenproblem into a perturbation problem, obtains perturbation solutions through standard perturbation theory, and then analytically continues the ...
Chang Liu, Wen-Du Li, Wu-Sheng Dai
openaire   +2 more sources

Using LIP to Gloss Over Faces in Single-Stage Face Detection Networks

, 2018
This work shows that it is possible to fool/attack recent state-of-the-art face detectors which are based on the single-stage networks. Successfully attacking face detectors could be a serious malware vulnerability when deploying a smart surveillance ...
D Chen, K Zhang, T Yamada, T-Y Lin, W Liu, Y Li   +5 more
core   +1 more source

Analyzing the Stability of a Connected Moving Cart on an Inclined Surface with a Damped Nonlinear Spring

Axioms
This paper examines the stability behavior of the nonlinear dynamical motion of a vibrating cart with two degrees of freedom (DOFs). Lagrange’s equations are employed to establish the mechanical regulating system of the examined motion.
Muneerah AL Nuwairan, T. S. Amer, W. S. Amer   +2 more
doaj   +1 more source

The exact solutions of nonlinear problems by Homotopy Analysis Method (HAM) [PDF]

Computational Ecology and Software, 2016
The present paper presents the comparison of analytical techniques. We establish the existence of the phenomena of the noise terms in the perturbation series solution and find the exact solution of the nonlinear problems.
Hafiz Abdul Wahab, Saira Bhatti, Mohammad Naeem   +2 more
doaj  

Antenna array calibration methods based on simultaneous perturbation

IET Microwaves, Antennas & Propagation, 2022
Antenna arrays have gained significant interest in millimetre‐wave communication systems as an enabling technology to achieve higher capacity and mitigate the high propagation loss.
Huijuan Xing, Yongwei Zhang, Yanwei Fu, Xianyang Lv, Zhihuo Xu, Jiajia Shi, Quan Shi, Murat Temiz, Ahmed El‐Makadema   +8 more
doaj   +1 more source

Perturbation and Variational Methods in Nonextensive Tsallis Statistics

, 1998
A unified presentation of the perturbation and variational methods for the generalized statistical mechanics based on Tsallis entropy is given here. In the case of the variational method, the Bogoliubov inequality is generalized in a very natural way ...
A. K. Rajagopal, A. M. Salzberg, A. Plastino, A. R. Plastino, B. H. Lavenda, B. H. Lavenda, B. H. Lavenda, B. H. Lavenda, B. J. Hiley, B. M. Boghosian, C. Tsallis, C. Tsallis, C. Tsallis, C. Tsallis, D. F. Torres, D. H. Zanette, E. K. Lenzi, E. M. F. Curado, E. M. F. Curado, E. M. F. Curado, I. Koponen, J. Binney, J. J. Aly, J. Klafter, J. O. Indekeu, J. O. Indekeu, J. P. Bouchaud, L. C. Malacarne, L. P. Chimento, L. Tisza, M. F. Shlesinger, M. F. Shlesinger, M. O. Caceres, P. Jund, P. T. Landsberg, R. P. Feynman, R. S. Mendes, R. S. Mendes, S. A. Cannas, S. K. Ma, V. H. Hamity   +40 more
core   +1 more source