Results 41 to 50 of about 1,253,716 (311)

Space of State Vectors in PT Symmetrical Quantum Mechanics [PDF]

open access: yes, 2001
Space of states of PT symmetrical quantum mechanics is examined. Requirement that eigenstates with different eigenvalues must be orthogonal leads to the conclusion that eigenfunctions belong to the space with an indefinite metric.
Azizov T Ya   +13 more
core   +2 more sources

Quantum phase estimations with spin coherent states superposition [PDF]

open access: yesThe European Physical Journal Plus, 2021
The quantum metrological performance of spin coherent states superposition is considered, and conditions for measurements with the Heisenberg-limit (HL) precision are identified. It is demonstrated that the choice of the parameter-generating operator can
Y. Maleki
semanticscholar   +1 more source

Boundedness and continuity of superposition operator on Er(p) and Fr(p) [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2002
Let X ∈ {Er(p)V , Fr(p)}, in this research, necessary and sufficient conditions are given for superposition operator to act from X into the space l1. Moreover, necessary and sufficient conditions are obtained for superposition operator acting from X into
Assa-aree Sama-ae
doaj  

Analytic Morrey Spaces and Bloch-Type Spaces

open access: yesJournal of Function Spaces, 2018
This paper is devoted to characterizing the boundedness of the Riemann-Stieltjes operators from analytic Morrey spaces to Bloch-type spaces. Moreover, the boundedness of the superposition operator and weighted composition operator on analytic Morrey ...
Ofori Samuel, Jianfei Wang, Yile Zhao
doaj   +1 more source

Construction and applications of the Dirichlet-to-Neumann operator in transmission line modeling [PDF]

open access: yes, 2009
The Dirichlet-to-Neumann (DIN) operator is a useful tool in the characterization of interconnect structures. in. combination with the Method of Moments; it con.
De Zutter, Daniël, Demeester, Thomas
core   +1 more source

On Nonlinear Vekua Type Equations

open access: yesNonlinear Analysis, 2006
Nonlinear Vekua-Bers type differential equations are studied on the base of certain methods of nonlinear analysis. A survey of recent results in the area is presented.
S. V. Rogosin
doaj   +1 more source

Formation of required distributions on the basis of decomposition by vortex eigen functions of a bounded non-paraxial propagation operator [PDF]

open access: yesКомпьютерная оптика, 2019
The solution of the problem of overcoming the diffraction limit based on the representation of an optical signal in the form of a superposition of communication modes matched with the vortex eigenfunctions of a bounded (in the object and spectral regions)
Svetlana Khonina   +2 more
doaj   +1 more source

Macroscopicity of quantum superpositions on a one-parameter unitary path in Hilbert space [PDF]

open access: yes, 2014
We analyze quantum states formed as superpositions of an initial pure product state and its image under local unitary evolution, using two measurement-based measures of superposition size: one based on the optimal quantum binary distinguishability of the
Volkoff, T. J., Whaley, K. B.
core   +3 more sources

Spectral of the nonlinear weighted superposition operator on Fock spaces

open access: yesAdvances in Operator Theory
We follow several approaches in nonlinear spectral theory and determine the various spectral forms for the nonlinear weighted superposition operator on Fock spaces. The results show that most of the forms introduced so far coincide and contain singeltons.
Yonas Eshetu Felke   +2 more
semanticscholar   +1 more source

Experiments testing macroscopic quantum superpositions must be slow [PDF]

open access: yes, 2015
We consider a thought experiment where the preparation of a macroscopically massive or charged particle in a quantum superposition and the associated dynamics of a distant test particle apparently allow for superluminal communication.
De Palma, Giacomo   +2 more
core   +3 more sources

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