Results 41 to 50 of about 19,967,816 (378)

On the number of eigenvalues of Schrödinger operators with complex potentials [PDF]

open access: yesJournal of the London Mathematical Society, 2016
We study the eigenvalues of Schrödinger operators with complex potentials in odd space dimensions. We obtain bounds on the total number of eigenvalues in the case where V decays exponentially at infinity.
R. Frank, A. Laptev, O. Safronov
semanticscholar   +1 more source

A numerical method for the solution of plane crack problems in finite media

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1980
A general method for the solution of plane isotropic elasticity crack problems inside a finite medium of arbitrary shape or an infinite medium with holes of arbitrary shape is presented.
P. S. Theocaris, N. Ioakimidis
doaj   +1 more source

Post-prior equivalence for transfer reactions with complex potentials [PDF]

open access: yes, 2017
In this paper, we address the problem of the post-prior equivalence in the calculation of inclusive breakup and transfer cross sections. For that, we employ the model proposed by Ichimura, Austern, and Vincent [Phys. Rev.
J. Lei, A. Moro
semanticscholar   +1 more source

Specialising neural network potentials for accurate properties and application to the mechanical response of titanium

open access: yesnpj Computational Materials, 2021
Large scale atomistic simulations provide direct access to important materials phenomena not easily accessible to experiments or quantum mechanics-based calculation approaches.
Tongqi Wen   +6 more
doaj   +1 more source

A Multi-Layered Ring Under Parabolic Pressure

open access: yesEngineering Transactions, 2016
The stress- and displacement-fields developed in a circular ring consisting of a finite number of linearly elastic homo¬geneous and isotropic concentric layers are determined.
Christos F. MARKIDES   +2 more
doaj   +1 more source

ORGANISMAL COMPLEXITY AND THE POTENTIAL FOR EVOLUTIONARY DIVERSIFICATION [PDF]

open access: yesEvolution, 2014
We present two theoretical approaches to investigate whether organismal complexity, defined as the number of quantitative traits determining fitness, and the potential for adaptive diversification are correlated. The first approach is independent of any specific ecological model and based on curvature properties of the fitness landscape as a function ...
Svardal, Hannes   +2 more
openaire   +3 more sources

1-dimensional Schrodinger operators with complex potentials

open access: yes, 2020
We discuss 1-dimensional Schrodinger operators with complex and locally integrable potentials that may have an arbitrary behavior at (finite or infinite) endpoints.
Dereziński, Jan, Georgescu, Vladimir
core   +1 more source

Stability of soliton families in nonlinear Schrödinger equations with non-parity-time-symmetric complex potentials [PDF]

open access: yes, 2016
Stability of soliton families in one-dimensional nonlinear Schrodinger equations with non-parity-time ( PT )-symmetric complex potentials is investigated numerically.
Jianke Yang, S. Nixon
semanticscholar   +1 more source

Solution of the problem on bending of a multiconnected piecewise homogeneous electromagnetoelastic thin plate [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
Using the complex potentials of the theory of bending of thin electromagnetoelastic plates, a solution has been obtained to the problem of bending a multiconnected piezoplate with elliptical inclusions made of other materials.
Kaloerov, Stefan A., Ermakov, Oleg E.
doaj   +1 more source

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