Results 31 to 40 of about 631,519 (293)
Spectral shift function for slowly varying perturbation of periodic Schrödinger operators [PDF]
Cubo (Temuco), 2012 In this paper we study the asymptotic expansion of the spectral shift function for the slowly varying perturbations of periodic Schr dinger operators. We give a weak and pointwise asymptotics expansions in powers of $h$ of the derivative of the spectral shift function corresponding to the pair $\big(P(h)=P_0+ (hx),P_0=- +V(x)\big),$ where $ (x)\in {
Dimassi, Mouez, Zerzeri, Maher
openaire +4 more sources
Energy correlations in heavy states
Journal of High Energy Physics, 2023 We study energy correlations in states created by a heavy operator acting on the vacuum in a conformal field theory. We argue that the energy correlations in such states exhibit two characteristic regimes as functions of the angular separations between ...
Dmitry Chicherin +3 more
doaj +1 more source
Statistical dependence analysis of Erbium doped fiber ring lasers (EDFRL) chaos
Results in Optics, 2021 Utilizing ergodic nature of chaotic lasers, the probability density function (PDF) estimation is carried out for peak amplitudes of pulsed chaos in Erbium Doped Fiber Ring Laser (EDFRL) in relation to varying the four key cavity parameters i.e.
Syed Zafar Ali, Muhammad Khawar Islam
doaj +1 more source
A Darboux-Type Theorem for Slowly Varying Functions
Journal of Combinatorial Theory, Series A, 1997 The authors say that a function \(h(z)\) is slowly varying if \(h(z)\) is analytic and nonzero on the half plane \(H\equiv \{z;\text{Re} z> 1/2\}\), and if \(\omega(z)= zh'(z)/h(z) \to 0\) as \(z\to \infty\) with \(z\) in \(H\). (There are a number of omissions of words, letters and numbers in this printed version.) This definition implies that for ...
Braaksma, BLJ, Stark, D
openaire +1 more source
Frontiers in Physics, 2020 In this article, the lump-type solutions of the new integrable time-dependent coefficient (2+1)-dimensional Kadomtsev-Petviashvili equation are investigated by applying the Hirota bilinear technique and a suitable ansatz.
Aliyu Isa Aliyu +6 more
doaj +1 more source
Envelope function method for electrons in slowly-varying inhomogeneously deformed crystals [PDF]
Journal of Physics: Condensed Matter, 2014 15 pages, 8 ...
Li, Wenbin, Qian, Xiaofeng, Li, Ju
openaire +3 more sources
New Conditions for the Exponential Stability of Pseudolinear Difference Equations in Banach Spaces
Abstract and Applied Analysis, 2016 We study the local exponential stability of evolution difference systems with slowly varying coefficients and nonlinear perturbations. We establish the robustness of the exponential stability in infinite-dimensional Banach spaces, in the sense that the ...
Rigoberto Medina
doaj +1 more source
ON THE ALMOST PERIODIC AT INFINITY FUNCTIONS FROM HOMOGENEOUS SPACES
Проблемы анализа, 2018 We consider homogeneous spaces of functions defined on the real axis (or semi-axis) with values in a complex Banach space. We study the new class of almost periodic at infinity functions from homogeneous spaces.
Baskakov A. G. +2 more
doaj +1 more source
Finite temperature correlations and density profiles of an inhomogeneous interacting 1D Bose gas [PDF]
, 2005 We calculate the density profiles and density correlation functions of the one-dimensional Bose gas in a harmonic trap, using the exact finite-temperature solutions for the uniform case, and applying a local density approximation.
D. C. Mattis +8 more
core +4 more sources
Tail index estimation, concentration and adaptivity [PDF]
, 2015 This paper presents an adaptive version of the Hill estimator based on Lespki's model selection method. This simple data-driven index selection method is shown to satisfy an oracle inequality and is checked to achieve the lower bound recently derived by ...
Boucheron, Stéphane, Thomas, Maud
core +3 more sources