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Equation-of-Motion Coupled-Cluster Cumulant Green’s Function for Excited States and X-Ray Spectra [PDF]

open access: yesFrontiers in Chemistry, 2021
Green’s function methods provide a robust, general framework within many-body theory for treating electron correlation in both excited states and x-ray spectra.
F. D. Vila   +4 more
doaj   +2 more sources

Green's function based finite element formulations for isotropic seepage analysis with free surface [PDF]

open access: goldLatin American Journal of Solids and Structures, 2015
A solution procedure using the Green's function based finite element method (FEM) is presented for two-dimensional nonlinear steady-state seepage analysis with the presence of free surface in isotropic dams.
Hui Wang, Ya-Ting Gao, Qing-Hua Qin
doaj   +2 more sources

On green’s function of second darboux problem for hyperbolic equation

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
A definition and justify a method for constructing the Green’s function of the second Darboux problem for a two-dimensional linear hyperbolic equation of the second order in a characteristic triangle is given.
B. Derbissaly
doaj   +1 more source

Statistics of Green's functions on a disordered Cayley tree and the validity of forward scattering approximation

open access: yesSciPost Physics, 2022
The accuracy of the forward scattering approximation for two-point Green's functions of the Anderson localization model on the Cayley tree is studied.
Pavel A. Nosov, Ivan M. Khaymovich, Andrey Kudlis, Vladimir E. Kravtsov
doaj   +1 more source

Discrete Green’s functions [PDF]

open access: yesMathematics of Computation, 1973
Let G ( P ; Q ) G(P;Q) be the discrete Green’s function over a discrete h-convex region Ω \Omega of the plane; i.e., a ( P ) G x x ¯
McAllister, G. T., Sabotka, E. F.
openaire   +2 more sources

On Green’s function of Cauchy–Dirichlet problem for hyperbolic equation in a quarter plane

open access: yesBoundary Value Problems, 2021
The definition of a Green’s function of a Cauchy–Dirichlet problem for the hyperbolic equation in a quarter plane is given. Its existence and uniqueness have been proven. Representation of the Green’s function is given.
Makhmud Sadybekov, Bauyrzhan Derbissaly
doaj   +1 more source

Far-field approximations to the derivatives of Green’s function for the Ffowcs Williams and Hawkings equation

open access: yesAdvances in Aerodynamics, 2022
The surface correction to the quadrupole source term of the Ffowcs Williams and Hawkings integral in the frequency domain suffers from the computation of high-order derivatives of Green’s function. The far-field approximations to the derivatives of Green’
Zhiteng Zhou   +3 more
doaj   +1 more source

Photoemission spectral functions from the three-body Green's function

open access: yesSciPost Physics, 2022
We present an original strategy for the calculation of direct and inverse photo-emission spectra from first principles. The main goal is to go beyond the standard Green's function approaches, such as the $GW$ method, in order to find a good description
Gabriele Riva, Timothée Audinet, Matthieu Vladaj, Pina Romaniello, J. Arjan Berger
doaj   +1 more source

Green’s function for the semi-infinite strip in terms of an improper integral [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2020
In this paper Green’s function for the semi-infinite strip (which is the two-dimensional Green’s function for a groove of infinite depth and length) is determined in the form of an improper integral, as opposed to the standard summation form ...
Filipović Dragan, Dlabač Tatijana
doaj   +1 more source

On a nabla fractional boundary value problem with general boundary conditions

open access: yesAIMS Mathematics, 2020
In this article, we consider a nabla fractional boundary value problem with general boundary conditions. Brackins & Peterson [5] gave an explicit expression for the corresponding Green’s function.
Jagan Mohan Jonnalagadda
doaj   +1 more source

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