[PDF] Top 20 sigma08-004. 284KB Jun 04 2011 12:10:12 AM

... There are two main results of the classification. First, we obtain spin s generalizations of constant coefficient linear second order symmetries found some years ago by Fushchich and Nikitin for Maxwell’s equations [8] ... Lihat dokumen lengkap

... of lro’s in S 1 and S 3 for a wide class of the spin- 1 2 XZ models (see also [11, 12]). This reference contains the most simple proofs of the existence of lro’s in ground states of quantum many-body systems. A ... Lihat dokumen lengkap

... Key words: global attractors; solitary waves; solitary asymptotics; nonlinear Klein–Gordon equation; dispersive Hamiltonian systems; unitary invariance 2000 Mathematics Subject Classifi[r] ... Lihat dokumen lengkap

... to an accelerated cosmological expansion. Dark energy was proposed to explain the accelerated expansion observed in studies of distant type Ia supernova [6, 7]. There are various proposals as to the nature of dark ... Lihat dokumen lengkap

... 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22], with a recent new burst of activity [23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, ... Lihat dokumen lengkap

... In the present paper, some characteristic examples of the symmetries are presented for var-ious plasma theory models: electron magnetohydrodynamics, collisionless electron plasma os-cill[r] ... Lihat dokumen lengkap

... Poisson manifolds are smooth manifolds with a Poisson bracket on their ring of functions (see [118] and Section 1.1). Since their introduction by Lichnerowicz in 1977 [88], Poisson geometry and the cohomology of Poisson ... Lihat dokumen lengkap

... 5 Duality From the general theory of Poisson–Lie symmetry presented in Section 2, we know that both symmetry Lie algebras GL = Lie LG and GR = Lie ¯B act on the phase space P∞ of the [r] ... Lihat dokumen lengkap

... Ifλis anintegral element, then the corresponding E-orbit function Eλx is symmetric also with respect to elements of the affine Weyl groupWeaff, corresponding to the groupWein fact, the[r] ... Lihat dokumen lengkap

... [9, 10] that the Nambu– Jona-Lasinio (NJL) model [11] minimally coupled to a background magnetic field with variable direction becomes massive only beyond some critical value of the strong coupling ... Lihat dokumen lengkap

... At the same time we have to point out that the manifestly covariant Lagrangian approach to duality-symmetric theories [8], which is in the focus of the paper, is not the only way to construct the least action principle ... Lihat dokumen lengkap

... Several simplest solutions of these unitarity equations have been found: three 2-parametric subgroups G1, G2, G3 – each of subgroups consists of two commuting Abelian unitary groups; 4-[r] ... Lihat dokumen lengkap

... There are much motivations to explore the SUSY QHE. With the developments of string theory, it was found that the non-anti-commutative geometry is naturally realized on D-brane in gravi- photon background [12, 13, ... Lihat dokumen lengkap

... also particle models with non-commutative gauge theory were explored [3] (see also [4]), [5, 6]. On the other hand the present intensive research has been triggered by the natural realiza- tion of non-commutativity of ... Lihat dokumen lengkap

... This is a review article of the papers [10] and [11]. Section 2 is devoted to the free field construction of boundary states in N = 2 superconformal minimal models. We start with the preliminary material on N = 2 ... Lihat dokumen lengkap

... However, for the case of Nambu–Goto matter described by the choice mab=T γab, such an action exists, and is of the form S =T The information that the particles are attached to string[r] ... Lihat dokumen lengkap

... Another part of this paper is devoted to a special vortex solution. This solution was in- troduced by L.V. Ovsyannikov [12] for ideal compressible and incompressible fluids. This is a partially invariant solution, ... Lihat dokumen lengkap

... If the noncommutativity is manifestly present in Nature, then it should somehow more con- ceptually affect matters also on the classical level. Not only in partial changes in the guiding Lagrangian and/or Hamiltonian, ... Lihat dokumen lengkap

... It was P.A. Smith and A.I. Mal’cev who first pointed out in the 1930’s [14, 15, 10] the crucial connection between globalizability and associativity. It took sixty more years to obtain a general method for ... Lihat dokumen lengkap

... Unfortunately, only in two dimensions the first Frenet curvature taken as the Lagrange function produces, due to its linearity in second derivatives, athird order equation.. In Section3.[r] ... Lihat dokumen lengkap