Results 21 to 30 of about 138,468 (211)

Accelerated normal and skew-Hermitian splitting methods for positive definite linear systems [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2013
For solving large sparse non-Hermitian positive definite linear equations, Bai et al. proposed the Hermitian and skew-Hermitian splitting methods (HSS). They recently generalized this technique to the normal and skew-Hermitian splitting methods (NSS). In
F. Toutounian, Davood Hezari
doaj   +1 more source

Honeycombs from Hermitian Matrix Pairs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
Knutson and Tao's work on the Horn conjectures used combinatorial invariants called hives and honeycombs to relate spectra of sums of Hermitian matrices to Littlewood-Richardson coefficients and problems in representation theory, but these relationships ...
Glenn Appleby, Tamsen Whitehead
doaj   +1 more source

Moments of the Hermitian Matrix Jacobi Process [PDF]

open access: yesJournal of Theoretical Probability, 2017
To appear in J.
Deleaval, Luc, Demni, Nizar
openaire   +4 more sources

Entanglement, non-hermiticity, and duality

open access: yesSciPost Physics, 2021
Usually duality process keeps energy spectrum invariant. In this paper, we provide a duality, which keeps entanglement spectrum invariant, in order to diagnose quantum entanglement of non-Hermitian non-interacting fermionic systems.
Li-Mei Chen, Shuai A. Chen, Peng Ye
doaj   +1 more source

Superintegrability for ( $$\beta $$ β -deformed) partition function hierarchies with W-representations

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We construct the ( $$\beta $$ β -deformed) partition function hierarchies with W-representations. Based on the W-representations, we analyze the superintegrability property and derive their character expansions with respect to the Schur functions and ...
Rui Wang   +3 more
doaj   +1 more source

Hermitian matrix model with plaquette interaction [PDF]

open access: yesNuclear Physics B, 1996
15 pages, no figures, two references ...
Chekhov, L., Kristjansen, C.
openaire   +4 more sources

Joint power control and user grouping mechanism for efficient uplink non‐orthogonal multiple access‐based 5G communication: Utilising the Lèvy‐flight firefly algorithm

open access: yesIET Networks, EarlyView., 2023
We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh   +4 more
wiley   +1 more source

Symmetry Classification and Universality in Non-Hermitian Many-Body Quantum Chaos by the Sachdev-Ye-Kitaev Model

open access: yesPhysical Review X, 2022
Spectral correlations are a powerful tool to study the dynamics of quantum many-body systems. For Hermitian Hamiltonians, quantum chaotic motion is related to random matrix theory spectral correlations.
Antonio M. García-García   +2 more
doaj   +1 more source

Family of Hermitian Low-Momentum Nucleon Interactions with Phase Shift Equivalence [PDF]

open access: yes, 2003
Using a Schmidt orthogonalization transformation, a family of Hermitian low-momentum NN interactions is derived from the non-Hermitian Lee-Suzuki (LS) low-momentum NN interaction. As special cases, our transformation reproduces the Hermitian interactions
D. B. Kaplan   +16 more
core   +1 more source

On the variation of the spectrum of a Hermitian matrix

open access: yesApplied Mathematics Letters, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wen Li 0006, Seak-Weng Vong
openaire   +1 more source

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