Results 21 to 30 of about 55,033 (326)
A PROPERTY OF GREEN'S FUNCTION [PDF]
Real Analysis Exchange, 1995 Let \(k\) be a positive integer, \(M_0\) and \(M_1\) subsets of \(\{0,1,\dots,k-1\}\) such that the sum of their cardinalities is \(k\). Suppose that the solution \(u=u(x)\) of the boundary value problem \(u^{(k)}=f\) in \((0,1)\), \(u^{(i)}=0\) for \(i\in M_0\), \(u^{(j)}(1)=0\) for \(j\in M_1\) with \(f\) not changing sign in \((0,1)\) can be ...
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IEEE Access, 2019 In this paper, the replacement values to the singularity of fitting Green's function are intensively researched in Fitting Green's function Fast Fourier Transformation (FG-FFT) for different frequency points.
Wei-Bin Kong +5 more
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Analysis of the vibrational mode spectrum of a linear chain with spatially exponential properties [PDF]
, 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
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Phonon Green's function. [PDF]
Proceedings of the National Academy of Sciences, 1991 The concepts of source and quantum action principle are used to produce the phonon Green's function appropriate for an initial phonon vacuum state. An application to the Mossbauer effect is presented.
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The asymptotic behaviour of the exact and approximative $\nu=1/2$ Chern-Simons Green's functions
, 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.
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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
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Confined coherence and analytic properties of Green's functions
, 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
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Universal features of Lifshitz Green's functions from holography [PDF]
, 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
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Universal behavior of quantum Green's functions
, 2003 We consider a general one-particle Hamiltonian H = - \Delta_r + u(r) defined in a d-dimensional domain. The object of interest is the time-independent Green function G_z(r,r') = .
Bielinska-Waz D. +12 more
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Nonlinear response in the cumulant expansion for core-level photoemission
Physical Review Research, 2020 Most currently used approximations for the one-particle Green's function G in the framework of many-body perturbation theory, such as Hedin's GW approximation or the cumulant GW+C approach, are based on a linear-response approximation for the screened ...
Marilena Tzavala +3 more
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