Articles with "matrix spectral" as a keyword



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Matrix Spectral Problems and Integrability Aspects of the Błaszak-Marciniak Lattice Equations

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Published in 2020 at "Reports on Mathematical Physics"

DOI: 10.1016/s0034-4877(20)30087-2

Abstract: A method to derive the matrix spectral problems of the Blaszak–Marciniak lattice equations is proposed, and the matrix Lax representations of all the three-field and four-field Blaszak-Marciniak lattice equations are given explicitly. The integrability aspects… read more here.

Keywords: integrability aspects; spectral problems; marciniak lattice; lattice equations ... See more keywords
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Determination of scale invariance in random-matrix spectral fluctuations without unfolding.

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Published in 2017 at "Physical Review E"

DOI: 10.1103/physreve.96.012110

Abstract: We apply the singular value decomposition (SVD) method, based on normal-mode analysis, to decompose the spectra of finite random matrices of standard Gaussian ensembles in trend and fluctuation modes. We use the fact that the… read more here.

Keywords: determination scale; scale invariance; random matrix; invariance random ... See more keywords

Crossover in nonstandard random-matrix spectral fluctuations without unfolding.

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Published in 2018 at "Physical Review E"

DOI: 10.1103/physreve.98.022110

Abstract: Recently, singular value decomposition (SVD) was applied to standard Gaussian ensembles of random-matrix theory to determine the scale invariance in spectral fluctuations without performing any unfolding procedure. Here, SVD is applied directly to the β-Hermite… read more here.

Keywords: spectral fluctuations; crossover nonstandard; nonstandard random; random matrix ... See more keywords

Higher-Order Matrix Spectral Problems and Their Integrable Hamiltonian Hierarchies

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Published in 2023 at "Mathematics"

DOI: 10.3390/math11081794

Abstract: Starting from a kind of higher-order matrix spectral problems, we generate integrable Hamiltonian hierarchies through the zero-curvature formulation. To guarantee the Liouville integrability of the obtained hierarchies, the trace identity is used to establish their… read more here.

Keywords: hamiltonian hierarchies; matrix spectral; higher order; integrable hamiltonian ... See more keywords