Results 71 to 80 of about 22,526 (213)
Reducing Memory Cost of Exact Diagonalization using Singular Value Decomposition [PDF]
, 2011 We present a modified Lanczos algorithm to diagonalize lattice Hamiltonians with dramatically reduced memory requirements, {\em without restricting to variational ansatzes}. The lattice of size $N$ is partitioned into two subclusters.
/SLAC +5 more
core +2 more sources
Journal of Applied Polymer Science, Volume 143, Issue 11, March 15, 2026.Morphology, mechanical properties and vibration damping properties of polyurea/GNP nanocomposites. ABSTRACT Studying structural dynamics of polyurea (PU) is pivotal to analyze its vibration‐damping features. In this study, a graphene‐reinforced PU coating with enhanced mechanical and damping properties was developed.
Haochen Yuan +4 more
wiley +1 more source
Lorentz Integral Transform for Inclusive and Exclusive Cross Sections with the Lanczos Method [PDF]
, 2002 The Lorentz Integral Transform (LIT) method is reformulated via the Lanczos algorithm both for inclusive and exclusive reactions. The new technique is tested for the total photoabsorption cross section of 3H and 4He.
Barnea, Nir +3 more
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Breaking Barriers in High‐Order Spectral Methods: The Intrinsic Matrix Approach
International Journal for Numerical Methods in Engineering, Volume 127, Issue 5, 15 March 2026.ABSTRACT This paper introduces a unified framework in Hilbert spaces for applying high‐order differential operators in bounded domains using Chebyshev, Legendre, and Fourier spectral methods. By exploiting the banded structure of differentiation matrices and embedding boundary conditions directly into the operator through a scaling law relating ...
Osvaldo Guimarães, José R. C. Piqueira
wiley +1 more source
Quantitative 3D Real‐Space Analysis of Photonic Supraparticles
Advanced Materials, Volume 38, Issue 17, 20 March 2026.This work shows that through quantitative 3D real‐space analysis, photonic supraparticles can be investigated in detail. By clustering and classifying all particles, structure features can easily be detected, and the internal structure can be quickly investigated. This methodology allows for quick identification of different crystal structures, such as
Jesse Ian Bückmann +5 more
wiley +1 more source
Density-functional perturbation theory goes time-dependent
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2008 The scope of time-dependent density-functional theory (TDDFT) is limited to the lowest portion of the spectrum of rather small systems (a few tens of atoms at most).
Gebauer, Ralph +2 more
doaj +1 more source
Improvement of DOA Estimation based on Lanczos Algorithm [PDF]
Engineering and Technology Journal, 2014 In this paper, the problem of estimating the Direction Of Arrival (DOA) is presented. DOA based on Eigen Vector Decomposition (EVD) shows that the computational complexities are costly and high so that eigen structure algorithms suffer for limited ...
Sinan Majid Abdul Satar +1 more
doaj +1 more source
Lanczos Boosted Numerical Linked-Cluster Expansion for Quantum Lattice Models
, 2018 Numerical linked-cluster expansions allow one to calculate finite-temperature properties of quantum lattice models directly in the thermodynamic limit through exact solutions of small clusters.
Bhattaram, Krishnakumar, Khatami, Ehsan
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New implementations of Lanczos method
Journal of Computational and Applied Mathematics, 1995 The author discusses a class of iterative solution methods for linear systems, based on formal orthogonal polynomials. As special cases it contains several implementations of the Lanczos method. He discusses some other implementations and compares them in the case of a matrix arising from the 5-point discretization of a 2-dimensional partial ...
openaire +2 more sources
NMR in Biomedicine, Volume 39, Issue 3, March 2026.We use synthetic (Aim 1), human brain (Aim 2) and phantom (Aim 3) data to assess how basis set choice affects Glu, tCr, tNAA and tCho quantification, focusing on the bias–variance trade‐off under varying SNR conditions. Including GABA, GSH, NAAG and glucose improved Glu estimates, reducing bias and variance below 10%.
Polina Emeliyanova +3 more
wiley +1 more source