Results 21 to 30 of about 58,000 (272)

Constant-Sign Green’s Function of a Second-Order Perturbed Periodic Problem

open access: yesAxioms, 2022
In this paper, we were interested in obtaining the exact expression and studying the regions of constant sign of Green’s function related to a second-order perturbed periodic problem coupled with integral boundary conditions at the extremes of the ...
Alberto Cabada   +2 more
doaj   +1 more source

Computation of Green's function by local variational quantum compilation

open access: yesPhysical Review Research, 2023
Computation of the Green's function is crucial to study the properties of quantum many-body systems such as strongly correlated systems. Although the high-precision calculation of the Green's function is a notoriously challenging task on classical ...
Shota Kanasugi   +5 more
doaj   +1 more source

Calculating the Green’s function of two-site fermionic Hubbard model in a photonic system

open access: yesNew Journal of Physics, 2022
The Green’s function has been an indispensable tool to study many-body systems that remain one of the biggest challenges in modern quantum physics for decades. The complicated calculation of the Green’s function impedes the research of many-body systems.
Jie Zhu   +4 more
doaj   +1 more source

Proper incorporation of self-adjoint extension method to Green's function formalism : one-dimensional $\delta^{'}$-function potential case [PDF]

open access: yes, 1995
One-dimensional $\delta^{'}$-function potential is discussed in the framework of Green's function formalism without invoking perturbation expansion.
Albeverio S   +12 more
core   +2 more sources

Penyelesaian Persamaan Telegraph Dan Simulasinya

open access: yesJurnal Fourier, 2013
Equation Telegraph is one of type from wave equation. Solving of the wave equation obtainable by using Green's function with the method of boundary condition problem.
Agus Miftakus Surur   +2 more
doaj   +1 more source

Compact expression of dyadic Green's function for homogeneous dielectric half‐space and its efficient double integral representation

open access: yesIET 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

Riquier–Neumann Problem for the Polyharmonic Equation in a Ball

open access: yesMathematics, 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

Maximal and minimal iterative positive solutions for singular infinite-point p-Laplacian fractional differential equations

open access: yesNonlinear 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

Closed expression of the interaction kernel in the Bethe-Salpeter equation for quark-antiquark bound states [PDF]

open access: yes, 2005
The interaction kernel in the Bethe-Salpeter equation for quark-antiquark bound states is derived from the Bethe-Salpeter equations satisfied by the quark-antiquark four-point Green's function.
C. Itzykson   +5 more
core   +2 more sources

Universal features of Lifshitz Green's functions from holography [PDF]

open access: yes, 2015
We examine the behavior of the retarded Green's function in theories with Lifshitz scaling symmetry, both through dual gravitational models and a direct field theory approach. In contrast with the case of a relativistic CFT, where the Green's function is
Keeler, Cynthia   +3 more
core   +2 more sources

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