Results 91 to 100 of about 1,194 (210)

Angle resolved photon spectrum and quasiparticle excitation spectrum in an exciton superfluid

open access: yes, 2009
4+ \epsilon pages, 2 color figures ...
Ye, Jinwu, Shi, T., Jiang, Longhua
openaire   +2 more sources

Resolvent Operator of the Matrix Schrödinger Equation on the Half-Line withQuasi-selfadjoint Potential

open access: yes, 2021
We obtain the resolvent operator of the matrix Schrödinger equation on the half-line with a quasi-selfadjoint matrix potential Q. We also assume each entry of Q is Lebesgue measurable on (0,∞) and Q has a finite first moment.
Mutlu, Gökhan
core  

On the Complex Spectrum of the Underlying Operator of a Reliability Model

open access: yesAxioms
We study the complex point spectral distribution of the underlying operator of the system consisting of a reliable machine, a storage buffer with infinite capacity and an unreliable machine.
Zhiyang Du, Geni Gupur
doaj   +1 more source

Some new bounds on resolvent energy of a graph

open access: yesOpen Mathematics
Let GG be a simple graph of order nn with eigenvalues λ1≥λ2≥…≥λn.{\lambda }_{1}\ge {\lambda }_{2}\ge \ldots \ge {\lambda }_{n}. The resolvent energy of GG is a spectrum-based graph invariant defined as ER(G)=∑i=1n(n−λi)−1.{\rm{ER}}(G)={\sum }_{i=1}^{n ...
Altındağ İlkay   +1 more
doaj   +1 more source

Branching form of the resolvent at thresholds for multi-dimensional discrete Laplacians

open access: yes, 2019
We consider the discrete Laplacian on Zd, and compute asymptotic expansions of its resolvent around thresholds embedded in continuous spectrum as well as those at end points.
Ito, Kenichi   +3 more
core   +1 more source

Some Resolvent Estimates in Harmonic Analysis

open access: yes, 2003
This thesis contains three papers about three different estimates of resolvents in harmonic analysis. These papers are: Paper 1. ``A Wiener tauberian theorem for weighted convolution algebras of zonal functions on the automorphism group of the unit disc''
Dahlner, Anders
core  

Spectral representation of the resolvent of a discrete operator

open access: yes, 1988
Let T be a discrete linear operator in a Hilbert space H with spectrum σ(T) = λii = 1∞, let Rλ(T) denote the resolvent of T, and let Pi denote the projection of H onto the generalized eigenspace N((γi,I − T)mj) along R((γi, I − T)mj), where mi is the ...
Lang, Patrick   +3 more
core   +1 more source

Exponential decay of two-body eigenfunctions: A review

open access: yesElectronic Journal of Differential Equations, 2000
We review various results on the exponential decay of the eigenfunctions of two-body Schrödinger operators. The exponential, isotropic bound results of Slaggie and Wichmann for eigenfunctions of Schrödinger operators corresponding to eigenvalues below ...
Peter Hislop
doaj  

The spectrum of periodic point perturbations and the Krein resolvent formula

open access: yes, 1998
We study periodic point perturbations, H, of a periodic elliptic operator H"0 on a connected complete non-compact Riemannian manifold X, endowed with an isometric, effective, properly discontinuous, and co-compact action of a discrete group #GAMMA#.
Bruening, J.   +2 more
core  

Spectrum Resolving Power of Hearing: Measurements, Baselines, and Influence of Maskers

open access: yesAudiology Research, 2011
Contemporary methods of measurement of frequency tuning in the auditory system are reviewed. Most of them are based on the frequency-selective masking paradigm and require multi-point measurements (a number of masked thresholds should be measured to obtain a single frequency-tuning estimate). Therefore, they are rarely used for practical needs.
openaire   +3 more sources

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