Results 191 to 200 of about 9,508,458 (397)

On embedded bound states of unitary operators and their regularity

open access: yesBulletin des Sciences Mathématiques, 2013
AbstractLet U be a unitary operator defined on some infinite-dimensional Hilbert space. We give a set of sufficient conditions to prove that the possible embedded bound states of U are in the domain of some power of an auxiliary self-adjoint operator A. This result is illustrated on a model of kicked quantum systems.
openaire   +3 more sources

Multivariate Neural Network Operators: Simultaneous Approximation and Voronovskaja‐Type Theorem

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, the simultaneous approximation and a Voronoskaja‐type theorem for the multivariate neural network operators of the Kantorovich type have been proved. In order to establish such results, a suitable multivariate Strang–Fix type condition has been assumed.
Marco Cantarini, Danilo Costarelli
wiley   +1 more source

The One‐Dimensional Coulomb Hamiltonian: Properties of Its Birman–Schwinger Operator

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT The objective of the present paper is to study in detail the properties of the Birman–Schwinger operator for a self‐adjoint realization of the one‐dimensional Hamiltonian with the Coulomb potential, both when the Hamiltonian is defined only on ℝ+$$ {\mathbb{R}}_{+} $$ and when it is defined on the whole real line.
S. Fassari   +4 more
wiley   +1 more source

Unitary equilibration after a quantum quench of a thermal state [PDF]

open access: green, 2011
N. Tobias Jacobson   +2 more
openalex   +1 more source

Experimental validation of Geant4 nuclear interaction models in dose calculations of therapeutic carbon ion beams

open access: yesMedical Physics, EarlyView.
Abstract Background The choice of nuclear interaction models in Monte Carlo simulations affects the dose calculation accuracy for light ion beam therapy. Purpose This study aimed to evaluate the dose calculation accuracy and simulation time of three GATE‐RTiON/Geant4 physics lists for therapeutic carbon ion beams, assessing their suitability for ...
Yihan Jia   +6 more
wiley   +1 more source

ANN‐Based Green's Function Approach for Reservoir Geomechanics

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Green's functions have been a tool to analyze important reservoir geomechanics effects like subsidence, compaction, well closure, and permeability variation. However, the classical Green's function is related to linear elastic, homogenous, and geometrically simplified media.
Matheus L. Peres   +2 more
wiley   +1 more source

Interplay Between Spin‐Triplet Pairing and Ferromagnetism in Uranium Ditelluride

open access: yesNano Select, EarlyView.
This study investigates how spin triplet superconductivity and ferromagnetism interact in uranium ditelluride (UTe2). It shows that magnetic fluctuations strongly influence the superconducting behavior. The results suggest that ferromagnetic tendencies can contribute to the stabilization of spin triplet pairing. These findings provide new insights into
Habtamu Anagaw Muluneh   +2 more
wiley   +1 more source

SELECTION CRITERIA OF COMPOUNDS FOR DEVELOPMENT OF HIGH-POTENT ANALGESICS AND OTHER CNS DRUGS

open access: yesРазработка и регистрация лекарственных средств, 2019
The global opioid crisis requires a paradigm shift in medical use of opioids, the development of methodology to reduce illicit drug use, and development of drug addiction treatment and antidotes.
A. V. Sosnov   +6 more
doaj  

Many-body state engineering using measurements and fixed unitary dynamics [PDF]

open access: gold, 2014
Mads Kock Pedersen   +3 more
openalex   +1 more source

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