Results 31 to 40 of about 338,760 (281)

Combining global and multi-scale features in a description of the solar wind-magnetosphere coupling [PDF]

Annales Geophysicae, 2003
The solar wind-magnetosphere coupling during substorms exhibits dynamical features in a wide range of spatial and temporal scales. The goal of our work is to combine the global and multi-scale description of magnetospheric dynamics in a unified ...
A. Y. Ukhorskiy, M. I. Sitnov, A. S. Sharma, K. Papadopoulos, K. Papadopoulos   +4 more
doaj   +1 more source

Cosmological zoo -- accelerating models with dark energy [PDF]

, 2006
ecent observations of type Ia supernovae indicate that the Universe is in an accelerating phase of expansion. The fundamental quest in theoretical cosmology is to identify the origin of this phenomenon.
Abraham R H, Andronov A A, Bautin N N, Belinsky V A, Belinsky V A, Belinsky V A, Ellis G F R Bertotti B de Felice F Pascolini A, Farina-Busto L, Gorini V Kamenshchik A Moschella U Pasquier V, Marek Szydłowski, Perko L, Sahni V, Shikin I S, Shtanov Y, Shtanov Y V, Stoeger W R Ellis G F R Kirchner U, Szydlowski M, Thom R   +17 more
core   +2 more sources

Global portraits of nonminimal inflation [PDF]

The European Physical Journal C, 2021
We reconsider the dynamical systems approach to analyze inflationary universe in the Jordan frame models of scalar field nonminimally coupled to curvature.
L. Järv, A. Toporensky
semanticscholar   +1 more source

Global Analysis of a Liénard System with Quadratic Damping

Discrete Dynamics in Nature and Society, 2018
In this paper, the global analysis of a Liénard equation with quadratic damping is studied. There are 22 different global phase portraits in the Poincaré disc.
Feng Guo
doaj   +1 more source

Using Convolutional Neural Network to Emulate Seasonal Tropical Cyclone Activity

Journal of Advances in Modeling Earth Systems, 2023
It has been widely recognized that tropical cyclone (TC) genesis requires favorable large‐scale environmental conditions. Based on these linkages, numerous efforts have been made to establish an empirical relationship between seasonal TC activities and ...
Dan Fu, Ping Chang, Xue Liu
doaj   +1 more source

Magnetic Oscillations in Dense Cold Quark Matter with Four-Fermion Interactions [PDF]

, 1999
The phase structures of Nambu-Jona-Lasinio models with one or two flavours have been investigated at non-zero values of $\mu$ and $H$, where $H$ is an external magnetic field and $\mu$ is the chemical potential.
A. S. Vshivtsev, A.D. Balaev, A.P. Prudnikov, A.S. Vshivtsev, A.S. Vshivtsev, A.S. Vshivtsev, A.S. Vshivtsev, A.S. Vshivtsev, A.S. Vshivtsev, A.Yu. Babansky, B. Geyer, B.A. Arbuzov, Chr.V. Christov, D. Bailin, D. Ebert, D. Ebert, D. Ebert, D. Ebert, D. Ebert, D. Ebert, D. Ebert, D. Ebert, D. Ebert, D. Ebert, D. Persson, D. Shoenberg, D.K. Kim, D.M. Gitman, E. Elizalde, E. Elizalde, E.J. Ferrer, H. Bateman, H. Forkel, H. Forkel, I.A. Shovkovy, I.A. Shushpanov, J. Berges, J. Fuchs, J. Schwinger, J.O. Andersen, K. G. Klimenko, K.G. Klimenko, K.G. Klimenko, K.G. Klimenko, L. Dolan, M. A. Vdovichenko, M. Alford, M. Iwasaki, M.K. Volkov, M.R. Brown, P. Elmfors, P. Elmfors, R. Rapp, S. Chakrabarty, S. Kawati, S. Schramm, S.P. Klevansky, S.P. Klevansky, T. Inagaki, T. Inagaki, T. Inagaki, T.M. Schwarz, V. Bernard, V.Ch. Zhukovsky, V.Ch. Zhukovsky, V.G. Vaks, V.G. Vaks, V.P. Gusynin, V.P. Gusynin, V.R. Khalilov, W. Dittrich, W.J. de Haas, Y. Nambu, Y. Nambu   +73 more
core   +3 more sources

GLOBAL PHASE PORTRAITS OF SOME REVERSIBLE CUBIC CENTERS WITH COLLINEAR OR INFINITELY MANY SINGULARITIES [PDF]

International Journal of Bifurcation and Chaos, 2012
We study the reversible cubic vector fields of the form ẋ = -y + ax2+ bxy + cy2- y(x2+ y2), ẏ = x + dx2+ exy + fy2+ x(x2+ y2), having simultaneously a center at infinity and at the origin. In this paper, the subclass of these reversible systems having collinear or infinitely many singularities are classified with respect to topological equivalence.
Caubergh, M., Llibre, J., Torregrosa, J.
  +8 more sources

Effects of small surface tension in Hele-Shaw multifinger dynamics: an analytical and numerical study [PDF]

, 2002
We study the singular effects of vanishingly small surface tension on the dynamics of finger competition in the Saffman-Taylor problem, using the asymptotic techniques described in [S. Tanveer, Phil. Trans. R. Soc. Lond. A 343, 155 (1993)]and [M. Siegel,
A.J. DeGregoria, A.J. DeGregoria, B.I. Shraiman, D. Bensimon, D.A. Kessler, D.C. Hong, E. Alvarez-Lacalle, E. Pauné, E. Pauné, F.X. Magdaleno, F.X. Magdaleno, F.X. Magdaleno, G. Baker, G. Tryggvason, G. Tryggvason, H.D. Ceniceros, H.D. Ceniceros, J. Casademunt, J. Casademunt, J. Casademunt, J. Casademunt, K.V. McCloud, M. Siegel, M. Siegel, M. Siegel, P.G. Saffman, R. Combescot, R. Krasny, S. Tanveer, S. Tanveer, S. Tanveer, S.D. Howison, S.D. Howison, S.P. Dawson, T. Hou, V.M. Entov, W. Dai   +36 more
core   +3 more sources

Multi-filament structures in relativistic self-focusing [PDF]

, 2000
A simple model is derived to prove the multi-filament structure of relativistic self-focusing with ultra-intense lasers. Exact analytical solutions describing the transverse structure of waveguide channels with electron cavitation, for which both the ...
A. B. Borisov, A. B. Borisov, A. B. Borisov, A. G. Litvak, A. J. Mackinnon, A. Kim, A. Kim, A. Pukhov, B. La Fontaine, C. Max, D. Anderson, E. Esarey, F. Cattani, F. Cattani, G. A. Askar’yan, G. Z. Sun, J. H. Marburger, M. Borghesi, M. D. Feit, M. D. Feit, M. Lisak, M. Perry, M. Tabak, P. E. Young, P. Sprangle, S. Y. Chen, S. Y. Chen, T. Kurki-Suonio, X. L. Chen   +28 more
core   +2 more sources

GLOBAL PHASE PORTRAITS OF QUADRATIC POLYNOMIAL DIFFERENTIAL SYSTEMS WITH A SEMI-ELEMENTAL TRIPLE NODE [PDF]

International Journal of Bifurcation and Chaos, 2013
Planar quadratic differential systems occur in many areas of applied mathematics. Although more than one thousand papers have been written on these systems, a complete understanding of this family is still missing. Classical problems, and in particular, Hilbert's 16th problem [Hilbert, 1900, 1902], are still open for this family.
JOAN C. ARTÉS, ALEX C. REZENDE, REGILENE D. S. OLIVEIRA   +2 more
openaire   +7 more sources