Results 51 to 60 of about 2,287,877 (286)
Hermitian matrix definiteness from quantum phase estimation
Quantum Information Processing, 2022 19 pages, 8 figures, 2 ...
Andrés Gómez, Javier Mas
openaire +3 more sources
Butson-type complex Hadamard matrices and association schemes on Galois rings of characteristic 4
Special Matrices, 2018 We consider nonsymmetric hermitian complex Hadamard matrices belonging to the Bose-Mesner algebra of commutative nonsymmetric association schemes. First, we give a characterization of the eigenmatrix of a commutative nonsymmetric association scheme of ...
Ikuta Takuya, Munemasa Akihiro
doaj +1 more source
Non-Hermitian Generalization of Rényi Entropy
Entropy, 2022 From their conception to present times, different concepts and definitions of entropy take key roles in a variety of areas from thermodynamics to information science, and they can be applied to both classical and quantum systems.
Daili Li, Chao Zheng
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The density matrix in the non-Hermitian approach to open quantum system dynamics
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2019 In this paper we review an approach to the dynamics of open quantum systems based of non-Hermitian Hamiltonians. Non-Hermitian Hamiltonians arise naturally when one wish to study a subsystem interacting with a continuum of states.
Alessandro Sergi
doaj +1 more source
Non-Hermitian systems and topology: A transfer-matrix perspective [PDF]
Physical review B, 2018 Non-Hermitian Hamiltonians---proposed to describe dissipative systems where the particles have a finite lifetime---exhibit many puzzling properties, strongly contrasting their Hermitian counterparts.
Flore K. Kunst, Vatsal Dwivedi
semanticscholar +1 more source
Cubic Idempotence Preserver Problem in Hermitian Matrix Space
Journal of Harbin University of Science and TechnologyPreserver problems are the study of preserving maps of certain invariants on a given mathematical structure. In order to preserve the cubic idempotent of Hermitian matrix space, we study the image from the basis of 2 × 2-dimensional Hermitian matrix ...
ZHANG Haoran, XU Jinli
doaj +1 more source
$1/N^2$ correction to free energy in hermitian two-matrix model
, 2004 Using the loop equations we find an explicit expression for genus 1 correction in hermitian two-matrix model in terms of holomorphic objects associated to spectral curve arising in large N limit.
A. Kitaev +10 more
core +1 more source
Generalized Finite Algorithms for Constructing Hermitian Matrices with Prescribed Diagonal and Spectrum [PDF]
, 2005 In this paper, we present new algorithms that can replace the diagonal entries of a Hermitian matrix by any set of diagonal entries that majorize the original set without altering the eigenvalues of the matrix.
Dhillon, Inderjit S. +3 more
core +2 more sources
Transport and spectral features in non-Hermitian open systems
Physical Review Research, 2021 We study the transport and spectral properties of a non-Hermitian one-dimensional disordered lattice, the diagonal matrix elements of which are random complex variables taking both positive (loss) and negative (gain) imaginary values: Their distribution ...
A. F. Tzortzakakis +3 more
doaj +1 more source
Complex outliers of Hermitian random matrices
, 2016 In this paper, we study the asymptotic behavior of the outliers of the sum a Hermitian random matrix and a finite rank matrix which is not necessarily Hermitian.
Rochet, Jean
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