Results 21 to 30 of about 48,754 (287)

Analysis of the vibrational mode spectrum of a linear chain with spatially exponential properties [PDF]

open access: yes, 2008
We deduce the dynamic frequency-domain-lattice Green's function of a linear chain with properties (masses and next-neighbor spring constants) of exponential spatial dependence.
Andrzej F. Nowakowski   +14 more
core   +5 more sources

Asymptotic extraction approach for antennas in a multilayered spherical media [PDF]

open access: yes, 2010
An efficient algorithm is introduced to enhance the convergence of dyadic Green's functions (DGF) in a layered spherical media where asymptotic expressions have been developed. The formulated expressions involve an infinite series of spherical eigenmodes
Khamas, S.K.
core   +1 more source

Green's functions and existence of solutions of nonlinear fractional implicit difference equations with Dirichlet boundary conditions [PDF]

open access: yesOpuscula Mathematica
This 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

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

Landau quantized dynamics and spectra for group-VI dichalcogenides, including a model quantum wire

open access: yesAIP 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

Analyticity and crossing symmetry of superstring loop amplitudes

open access: yesJournal 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

The asymptotic behaviour of the exact and approximative $\nu=1/2$ Chern-Simons Green's functions

open access: yes, 2002
We consider the asymptotic behaviour of the Chern-Simons Green's function of the $\nu=1/\tilde{\phi}$ system for an infinite area in position-time representation. We calculate explicitly the asymptotic form of the Green's function of the interaction free
Dietel, J.
core   +1 more source

Confined coherence and analytic properties of Green's functions

open access: yes, 1997
A simple model of noninteracting electrons with a separable one-body potential is used to discuss the possible pole structure of single particle Green's functions for fermions on unphysical sheets in the complex frequency plane as a function of the ...
A. Luther   +7 more
core   +1 more source

Perturbation of infinite networks of resistors [PDF]

open access: yes, 2001
The resistance between arbitrary nodes of infinite networks of resistors is studied when the network is perturbed by removing one bond from the perfect lattice. A connection is made between the resistance and the lattice Green's function of the perturbed
Cserti, József   +2 more
core   +2 more sources

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

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