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Green's Functions [PDF]

open access: bronzeNature, 1970
Green's Functions Introductory Theory with Applications. By G. F. Roach. (The New University Mathematics Series.) Pp. xii + 279. published by (Van Nostrand Reinhold: London and New York, January 1970.) 90s.
Bill Williams
openalex   +2 more sources

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

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

Quasiplurisubharmonic Green functions [PDF]

open access: yesJournal de Mathématiques Pures et Appliquées, 2009
Given a compact K hler manifold $X$, a quasiplurisubharmonic function is called a Green function with pole at $p\in X$ if its Monge-Amp re measure is supported at $p$. We study in this paper the existence and properties of such functions, in connection to their singularity at $p$.
Coman, Dan, Guedj, Vincent
openaire   +5 more sources

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

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

Calculation of the Green's function on near-term quantum computers

open access: yesPhysical Review Research, 2020
The Green's function plays a crucial role when studying the nature of quantum many-body systems, especially strongly correlated systems. Although the development of quantum computers in the near future may enable us to compute energy spectra of ...
Suguru Endo   +2 more
doaj   +1 more source

2D topological matter from a boundary Green's functions perspective: Faddeev-LeVerrier algorithm implementation

open access: yesSciPost Physics, 2022
Since the breakthrough of twistronics a plethora of topological phenomena in correlated systems has appeared. These devices can be typically analyzed in terms of lattice models using Green's function techniques. In this work we introduce a general method
Miguel Alvarado, Alfredo Levy Yeyati
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 ¯
E. F. Sabotka, G. T. McAllister
openaire   +3 more sources

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