Results 61 to 70 of about 174,528 (270)

Molecular van der Waals Space and Topological Indices from the Distance Matrix

open access: yesMolecules, 2004
A comparative study of 36 molecular descriptors derived from the topologicaldistance matrix and van der Waals space is carried out within this paper.
Seiman Corina   +6 more
doaj   +1 more source

Elliptic quantum curves of class S k $$ {\mathcal{S}}_k $$

open access: yesJournal of High Energy Physics, 2021
Quantum curves arise from Seiberg-Witten curves associated to 4d N $$ \mathcal{N} $$ = 2 gauge theories by promoting coordinates to non-commutative operators.
Jin Chen   +3 more
doaj   +1 more source

Unambiguous Quantum State Discrimination in a PT$\mathcal {PT}$‐Symmetric System of a Single Trapped Ion

open access: yesAdvanced Science, EarlyView.
An unambiguous quantum state discrimination for two nonorthogonal states is demonstrated using a single ion. By implementing a non‐Hermitian Hamiltonian with parity‐time‐reversal (PT) symmetry, two candidate states evolve with different speed and become orthogonal at specific time, hence can be discriminated unambiguously. Experiments are performed for
Chenhao Zhu   +5 more
wiley   +1 more source

On Approximating the eigenvalues and eigenvectors of linear continuous operators

open access: yesJournal of Numerical Analysis and Approximation Theory, 1997
Not available.
Emil Cătinaş, I Păvăloiu
doaj   +2 more sources

Design and Reprogrammability of Zero Modes in 2D Materials from a Single Element

open access: yesAdvanced Science, EarlyView.
Straight‐line mechanisms embedded in symmetric lattices explicitly define and reprogram zero modes in 2D extremal metamaterials. Rotating each unit cell in situ tunes extremal behaviors, spanning isotropic, orthotropic, and chiral responses. Experiments and numerical methods show continuous control of Poisson’s ratios, Young's moduli, and normal‐shear ...
Daniel Revier   +2 more
wiley   +1 more source

The Rabi Oscillation in Subdynamic System for Quantum Computing

open access: yesAdvances in Mathematical Physics, 2015
A quantum computation for the Rabi oscillation based on quantum dots in the subdynamic system is presented. The working states of the original Rabi oscillation are transformed to the eigenvectors of subdynamic system. Then the dissipation and decoherence
Bi Qiao, Gu Jiayin
doaj   +1 more source

Variational quantum state eigensolver

open access: yesnpj Quantum Information, 2022
Extracting eigenvalues and eigenvectors of exponentially large matrices will be an important application of near-term quantum computers. The variational quantum eigensolver (VQE) treats the case when the matrix is a Hamiltonian. Here, we address the case
M. Cerezo   +3 more
doaj   +1 more source

An integral method for solving nonlinear eigenvalue problems

open access: yes, 2010
We propose a numerical method for computing all eigenvalues (and the corresponding eigenvectors) of a nonlinear holomorphic eigenvalue problem that lie within a given contour in the complex plane.
A. Jentzen   +32 more
core   +1 more source

The Role of Coordination Mechanisms and Transaction Costs Promoting Sustainability Performance in Agri‐Food Supply Chains: Evidence From Ecuador

open access: yesAgribusiness, EarlyView.
ABSTRACT Social tensions and resource depletion pose significant challenges to the agri‐food sector, highlighting the need for coordinated strategies to ensure sustainability in supply chains. Despite its critical importance, the relationship between coordination mechanisms and sustainability performance remains underexplored.
Carlos Moreno‐Miranda, Liesbeth Dries
wiley   +1 more source

Mapping uncertainty using differentiable programming

open access: yesAIChE Journal, EarlyView.
Abstract Uncertainty quantification (UQ) and propagation is a ubiquitous challenge in science, permeating our field in a general fashion, and its importance cannot be overstated. Recently, the commoditization of differentiable programming, motivated by the development of machine learning, has allowed easier access to tools for evaluating derivatives of
Victor Alves   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy