Results 1 to 10 of about 17,519,874 (311)

Isoresonant complex-valued potentials and symmetries [PDF]

open access: yesCanadian Journal of Mathematics, 2009
Let $X$ be a connected Riemannian manifold such that the resolvent of the free Laplacian $(\Delta-z)^{-1}, z\in\C\setminus\R^{+},$ has a meromorphic continuation through $\R^{+}$. The poles of this continuation are called resonances.
Agmon   +23 more
core   +2 more sources

Instantaneous modulations in time-varying complex optical potentials [PDF]

open access: yesNew Journal of Physics, 2017
We study the impact of a spatially homogeneous yet non-stationary dielectric permittivity on the dynamical and spectral properties of light. Our choice of potential is motivated by the interest in ${ \mathcal P }{ \mathcal T }$ -symmetric systems as an ...
Armen G Hayrapetyan   +2 more
doaj   +3 more sources

Complex Potentials and Integral Equations for Thermoelasticity Problem of Orthotropic Cracked Plate [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2022
In the present article, the plane thermoelasticity problem of an infinite orthotropic cracked plate, is studied. The interaction between thermal and mechanical field, in a plate containing a crack and a heat source is investigated. The plate is submitted
Panagiota Lalou   +1 more
doaj   +1 more source

Revisiting classical concepts of Linear Elastic Fracture Mechanics - Part I: The closing �mathematical� crack in an infinite plate and the respective Stress Intensity Factors

open access: yesFracture and Structural Integrity, 2023
This is the first part of a short three-paper series, aiming to revisit some classical concepts of Linear Elastic Fracture Mechanics. The motive of this first paper is to highlight some controversial issues, related to the unnatural overlapping of the ...
Christos F. Markides   +1 more
doaj   +1 more source

Quantum complex Hénon–Heiles potentials [PDF]

open access: yesPhysics Letters A, 2001
Quantum-mechanical PT-symmetric theories associated with complex cubic potentials such as V=x^2+y^2+igxy^2 and V=x^2+y^2+z^2+igxyz, where g is a real parameter, are investigated. These theories appear to possess real, positive spectra. Low-lying energy levels are calculated to very high order in perturbation theory.
Simsek, M   +3 more
openaire   +4 more sources

Bending by Concentrated Force of a Cantilever Strip Having a Through-thickness Crack Perpendicular to Its Axis

open access: yesApplied Sciences, 2020
The article focuses on the bending problem for a cantilever beam with a straight through-thickness crack, perpendicular to its axis under bending by concentrated force.
Mykhaylo Delyavskyy   +2 more
doaj   +1 more source

Second-Order Multiparameter Problems Containing Complex Potentials

open access: yesAxioms, 2022
In this work, we provide some lower bounds for the number of squarly integrable solutions of some second-order multiparameter differential equations. To obtain the results, we use both Sims and Sleeman’s ideas and the results are some generalization of ...
Ibrahim Erdal, Ekin Uğurlu
doaj   +1 more source

Attack Potential in Impact and Complexity [PDF]

open access: yesProceedings of the 12th International Conference on Availability, Reliability and Security, 2017
Vulnerability exploitation is reportedly one of the main attack vectors against computer systems. Yet, most vulnerabilities remain unexploited by attackers. It is therefore of central importance to identify vulnerabilities that carry a high `potential for attack'. In this paper we rely on Symantec data on real attacks detected in the wild to identify a
Allodi L., Massacci F.
openaire   +3 more sources

Electrical Potentials in Stomatal Complexes [PDF]

open access: yesPlant Physiology, 1981
Guard cells of several species, but predominantly Commelina communis, were impaled by micropipette electrodes and potential differences measured that occurred between cell compartments and the flowing bathing medium. The wall developed a Donnan potential that was between -60 and -70 millivolt in 30 millimolar KCl at pH 7.
R A, Saftner, K, Raschke
openaire   +2 more sources

SUSY Quantum Mechanics with Complex Superpotentials and Real Energy Spectra [PDF]

open access: yes, 1998
We extend the standard intertwining relations used in Supersymmetrical (SUSY) Quantum Mechanics which involve real superpotentials to complex superpotentials.
A. A. ANDRIANOV   +4 more
core   +2 more sources

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