Results 21 to 30 of about 808,768 (351)
A non-Hermitian $PT-$symmetric Bose-Hubbard model: eigenvalue rings from unfolding higher-order exceptional points [PDF]
, 2008 We study a non-Hermitian $PT-$symmetric generalization of an $N$-particle, two-mode Bose-Hubbard system, modeling for example a Bose-Einstein condensate in a double well potential coupled to a continuum via a sink in one of the wells and a source in the ...
Graefe, E. M. +3 more
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Perturbation theory for plasmonic eigenvalues [PDF]
Physical Review B, 2009 We develop a perturbative approach for calculating, within the quasistatic approximation, the shift of surface resonances in response to a deformation of a dielectric volume. Our strategy is based on the conversion of the homogeneous system for the potential which determines the plasmonic eigenvalues into an inhomogeneous system for the potential's ...
Svend-Age Biehs +5 more
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Perturbation series for Jacobi matrices and the quantum Rabi model [PDF]
Opuscula Mathematica, 2021 We investigate eigenvalue perturbations for a class of infinite tridiagonal matrices which define unbounded self-adjoint operators with discrete spectrum.
Mirna Charif, Lech Zielinski
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Perturbations of nonlinear eigenvalue problems
Communications on Pure & Applied Analysis, 2019 arXiv admin note: text overlap with arXiv:1804 ...
Papageorgiou, Nikolaos S. +2 more
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Journal of Low Frequency Noise, Vibration and Active Control, 2018 The partial eigenvalue (or natural frequency) assignment or placement, only by the stiffness matrix perturbation, of an undamped vibrating system is addressed in this paper. A novel and explicit formula of determining the perturbating stiffness matrix is
Jiafan Zhang +3 more
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Development of an Adjoint Flux Calculation Technique for Exact Perturbation Theory in Monte Carlo Code MCS [PDF]
EPJ Web of ConferencesA calculation technique computing the adjoint flux of perturbed system is developed for the exact perturbation theory in Monte Carlo transport. By using a correlated sampling and iterated fission probability methods together, the adjoint flux of ...
Jo Yunki, Lee Deokjung
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Topology uniformity pinning control for multi-agent flocking
Complex & Intelligent Systems, 2023 The optimal selection of pinning nodes for multi-agent flocking is a challenging NP-hard problem. Current pinning node selection strategies mainly rely on centrality measures of complex networks, which lack rigorous mathematical proof for effective ...
Jintao Liu +4 more
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Perturbation of eigenvalues of the Klein–Gordon operators [PDF]
Revista Matemática Complutense, 2019 We prove inclusion theorems for both spectra and essential spectra as well as two-sided bounds for isolated eigenvalues for Klein-Gordon type Hamiltonian operators. We first study operators of the form $JG$, where $J$, $G$ are selfadjoint operators on a Hilbert space, $J = J^* = J^{-1}$ and $G$ is positive definite and then we apply these results to ...
Ivica Nakić, Krešimir Veselić
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Perturbed eigenvalue problems: an overview [PDF]
Studia Universitatis Babes-Bolyai Matematica, 2021 The study of perturbed eigenvalue problems has been a very active field of investigation throughout the years. In this survey we collect several results in the field.
Denisa Stancu-Dumitru +3 more
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Fourth-order Perturbed Eigenvalue Equation for Stepwise Damage Detection of Aeroplane Wing
MATEC Web of Conferences, 2016 Perturbed eigenvalue equations up to fourth-order are established to detect structural damage in aeroplane wing. Complete set of perturbation terms including orthogonal and non-orthogonal coefficients are computed using perturbed eigenvalue and ...
Wong Chun Nam +3 more
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