Results 21 to 30 of about 16,136 (293)
IET Microwaves, Antennas & Propagation, 2022 The dyadic Green's function can be represented via spatial derivatives of two Sommerfeld integrals when an infinitesimal electric dipole and an observation point are located above an infinite planar dielectric interface.
Il‐Suek Koh
doaj +1 more source
Green's function in general relativity [PDF]
, 2023 This report provides Green's functions (classical propagators) of gravitational fields of vierbein and spin-connection in general relativity. The existence of Green's function of the Laplace operator in curved space with an indefinite metric is ensured ...
Kurihara, Yoshimasa
core +1 more source
Nonlinear Analysis, 2019 The existence of maximal and minimal positive solutions for singular infinite-point p-Laplacian fractional differential equation is investigated in this paper. Green's function is derived, and some properties of Green's function are obtained.
Limin Guo, Lishan Liu
doaj +1 more source
Riquier–Neumann Problem for the Polyharmonic Equation in a Ball
Mathematics, 2023 The Green’s function of the Riquier–Neumann problem for the polyharmonic equation in the unit ball is constructed. Using the obtained Green’s function, an integral representation of the solution to the Riquier–Neumann problem in the unit ball is found.
Valery Karachik
doaj +1 more source
Green's function approach to the Ising model [PDF]
, 1969 It is shown that the spin [Formula: see text] Ising model can be formulated as a spinless fermion many-body problem and that the Green's function technique can be applied to it. The hierarchy of Green's function equations of motion terminates at the (q +
K. C. Lee, Robert Barrie
core +1 more source
Green's functions and existence of solutions of nonlinear fractional implicit difference equations with Dirichlet boundary conditions [PDF]
Opuscula MathematicaThis article is devoted to deduce the expression of the Green's function related to a general constant coefficients fractional difference equation coupled to Dirichlet conditions. In this case, due to the points where some of the fractional operators are
Alberto Cabada +2 more
doaj +1 more source
Analyticity and crossing symmetry of superstring loop amplitudes
Journal of High Energy Physics, 2019 Bros, Epstein and Glaser proved crossing symmetry of the S-matrix of a theory without massless fields by using certain analyticity properties of the off-shell momentum space Green’s function in the complex momentum plane.
Corinne de Lacroix +2 more
doaj +1 more source
GREEN FUNCTIONS FOR TOPOLOGY CHANGE [PDF]
International Journal of Modern Physics A, 2005 We explicitly calculate the Green functions describing quantum changes of topology in Friedmann-Lemaître-Robertson-Walker Universes whose spacelike sections are compact but endowed with distinct topologies. The calculations are performed using the long wavelength approximation at second order in the gradient expansion.
Martin, Jérôme +2 more
openaire +4 more sources
Landau quantized dynamics and spectra for group-VI dichalcogenides, including a model quantum wire
AIP Advances, 2017 This work is concerned with the derivation of the Green’s function for Landau-quantized carriers in the Group-VI dichalcogenides. In the spatially homogeneous case, the Green’s function is separated into a Peierls phase factor and a translationally ...
Norman J. M. Horing
doaj +1 more source
Calculation of Green's Function for Poisson's Equation in Plane Polar Coordinates
Trends in Computational and Applied MathematicsA new calculation of Green's function for Poisson's equation in plane polar coordinates is presented. The method consists in first calculating the solution to the simpler problem, but with the same Green's function, that is obtained with the ...
R. T. Couto
doaj +1 more source