Results 41 to 50 of about 2,287,877 (286)
Family of Hermitian Low-Momentum Nucleon Interactions with Phase Shift Equivalence [PDF]
, 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
Definitizable hermitian matrix pencils
Aequationes Mathematicae, 1992 The paper presents three characterizations of strongly definitizable pencils, which generalize the classical results for definite pencils. They are in particular stably simultaneously diagonable. Also this form of stability is discussed with respect to an open subset of the real line. Implications for some quadratic eigenvalue problems are included.
LANCASTER, P., Ye, Qiang
openaire +2 more sources
Physical 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
IET 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
Ranks of a Constrained Hermitian Matrix Expression with Applications
Journal of Applied Mathematics, 2013 We establish the formulas of the maximal and minimal ranks of the quaternion Hermitian matrix expression C4−A4XA4∗ where X is a Hermitian solution to quaternion matrix equations A1X=C1, XB1=C2, and A3XA3*=C3.
Shao-Wen Yu
doaj +1 more source
The Hermitian -Conjugate Generalized Procrustes Problem
Abstract and Applied Analysis, 2013 We consider the Hermitian -conjugate generalized Procrustes problem to find Hermitian -conjugate matrix such that is minimum, where , , , and (, ) are given complex matrices, and and are positive integers. The expression of the solution to Hermitian
Hai-Xia Chang +2 more
doaj +1 more source
Pseudo-Supersymmetry and the Domain-Wall/Cosmology Correspondence [PDF]
, 2006 The correspondence between domain-wall and cosmological solutions of gravity coupled to scalar fields is explained. Any domain wall solution that admits a Killing spinor is shown to correspond to a cosmology that admits a pseudo-Killing spinor: whereas ...
Kostas Skenderis +3 more
core +3 more sources
Exact correlators in the Gaussian Hermitian matrix model
Physics Letters B, 2019 We present the W1+∞ constraints for the Gaussian Hermitian matrix model, where the constructed constraint operators yield the W1+∞ n-algebra. For the Virasoro constraints, we note that the constraint operators give the null 3-algebra.
Bei Kang +4 more
doaj +1 more source
Hilbert’s 17th problem in free skew fields
Forum of Mathematics, Sigma, 2020 This paper solves the rational noncommutative analogue of Hilbert’s 17th problem: if a noncommutative rational function is positive semidefinite on all tuples of Hermitian matrices in its domain, then it is a sum of Hermitian squares of noncommutative ...
Jurij Volčič
doaj +1 more source
Determination of the domain of the admissible matrix elements in the four-dimensional PT-symmetric anharmonic model [PDF]
, 2007 Many manifestly non-Hermitian Hamiltonians (typically, PT-symmetric complex anharmonic oscillators) possess a strictly real, "physical" bound-state spectrum. This means that they are (quasi-)Hermitian with respect to a suitable non-standard metric.
Ahmed +49 more
core +2 more sources