Results 21 to 30 of about 467,366 (265)

Solitons in optical metamaterials with anti-cubic law of nonlinearity by ETEM and IGEM

Journal of the European Optical Society-Rapid Publications, 2018
Background This paper studies soliton perturbation in optical metamaterials, with anticubic nonlinearity. Methods Two integration approaches, namely, the extended trial equation method (ETEM) and the improved G’/Gexpansion method (IGEM) are presented ...
Mohammadreza Foroutan, Jalil Manafian, Arash Ranjbaran   +2 more
doaj   +1 more source

Iterative Solutions for Low Lying Excited States of a Class of Schroedinger Equation [PDF]

, 2006
The convergent iterative procedure for solving the groundstate Schroedinger equation is extended to derive the excitation energy and the wave function of the low-lying excited states. The method is applied to the one-dimensional quartic potential problem.
Friedberg R, R Friedberg, T. D Lee, Zhao Wei-Qin   +3 more
core   +2 more sources

New Variational Principles for Two Kinds of Nonlinear Partial Differential Equation in Shallow Water [PDF]

Journal of Applied and Computational Mechanics
Variational principles are very important for a lot of nonlinear problems to be analyzed theoretically or solved numerically. By the popular semi-inverse method and designing trial-Lagrange functionals skillfully, new variational principles are ...
Xiao-Qun Cao, Meng-Ge Zhou, Si-Hang Xie, Ya-Nan Guo, Ke-Cheng Peng   +4 more
doaj   +1 more source

Ordering of Energy Levels for Extended SU(N) Hubbard Chain [PDF]

, 2010
The Lieb-Mattis theorem on the antiferromagnetic ordering of energy levels is generalized to SU(N) extended Hubbard model with Heisenberg exchange and pair-hopping terms.
Hakobyan, Tigran
core   +5 more sources

Light Higgs bosons from a strongly interacting Higgs sector [PDF]

, 2001
The mass and the decay width of a Higgs boson in the minimal standard model are evaluated by a variational method in the limit of strong self-coupling interaction.
, , , Altarelli G., F Siringo, Gunion J. F., Herrero M. J., Rupp G.   +7 more
core   +3 more sources

Variational Principle of Bogoliubov and Generalized Mean Fields in Many-Particle Interacting Systems [PDF]

, 2015
The approach to the theory of many-particle interacting systems from a unified standpoint, based on the variational principle for free energy is reviewed.
Kuzemsky, A. L.
core   +1 more source

Improved variational description of the Wick-Cutkosky model with the most general quadratic trial action

, 2001
We generalize the worldline variational approach to field theory by introducing a trial action which allows for anisotropic terms to be induced by external 4-momenta of Green's functions.
Rosenfelder, R., Schreiber, A. W.
core   +3 more sources

Residual-QSAR. Implications for genotoxic carcinogenesis

Chemistry Central Journal, 2011
Introduction Both main types of carcinogenesis, genotoxic and epigenetic, were examined in the context of non-congenericity and similarity, respectively, for the structure of ligand molecules, emphasizing the role of quantitative structure-activity ...
Putz Mihai V
doaj   +1 more source

Post-Newtonian Models of Binary Neutron Stars [PDF]

, 1997
Using an energy variational method, we calculate quasi-equilibrium configurations of binary neutron stars modeled as compressible triaxial ellipsoids obeying a polytropic equation of state.
A. G. Wiseman, C. Chandrasekhar, C. Chandrasekhar, C. Chandrasekhar, C. Chandrasekhar, C. Cutler, C. Cutler, C. M. Will, C. S. Kochanek, C. W. Lincoln, D. J. Nice, D. Lai, D. Lai, D. Lai, D. Lai, D. Lai, D. Lai, D. Lai, D. Lai, F. A. Rasio, Frederic A. Rasio, G. B. Cook, G. J. Mathews, J. R. Wilson, J. R. Wilson, James C. Lombardi, K. Oohara, K. Taniguchi, K. Taniguchi, L. Bildsten, L. Blanchet, L. E. Kidder, L. E. Kidder, M. Ruffert, M. Shibata, M. Shibata, P. R. Brady, R. A. Matzner, R. B. Wiringa, R. Epstein, R. F. Tooper, R. Narayan, S. L. Shapiro, Stuart L. Shapiro, T. Baumgarte, T. Damour, W. D. Arnett, X. Zughe, Y. B. Zel'dovich   +48 more
core   +4 more sources

An embedding scheme for the Dirac equation

, 2004
An embedding scheme is developed for the Dirac Hamiltonian H. Dividing space into regions I and II separated by surface S, an expression is derived for the expectation value of H which makes explicit reference to a trial function defined in I alone, with
Abramowitz M, Benesh G A, Christensen N E, Crampin S, Dix L, Ebert H, Ebert H, Grass M, Greiner W, Halilov S V, Inglesfield J E, Inglesfield J E, Ishida H, Krutzen B C H, Loucks T, MacDonald A H, Malli G L, Nekovee M, Nemoshkalenko V V, Rose M E, S Crampin, Strange P, Strange P, Strange P, Takeda T, Trioni M I, van Hoof J B A N, Yamagami H   +27 more
core   +1 more source