Results 21 to 30 of about 2,622 (64)

Quark-Hadron Duality and Effective Continuum Thresholds in Dispersive Sum Rules

open access: yes, 2010
A novel procedure for extracting hadron characteristics from QCD sum rules, based on effective continuum thresholds (necessary for the implementation of quark-hadron duality) which may depend on the involved momenta and on the Borel parameter(s), enables
Lucha, Wolfgang   +2 more
core   +1 more source

Comparison between the (G’/G) - expansion method and the modified extended tanh method

open access: yesOpen Physics, 2016
In this paper, firstly, we give a connection between well known and commonly used methods called the (G'G)$\left( {{{G'} \over G}} \right)$ -expansion method and the modified extended tanh method which are often used for finding exact solutions of ...
Akçaği Şamil, Aydemir Tuğba
doaj   +1 more source

Local-duality QCD sum rule for the pion elastic form factor

open access: yes, 2010
This work presents the results of our analysis of the accuracy of the pion form factor derived from the local-duality version of QCD sum rules.Comment: Presented at the International Conference "Quark Confinement and the Hadron Spectrum IX", August ...
Balakireva, Irina   +2 more
core   +1 more source

Unification of all hyperbolic tangent function methods

open access: yesOpen Physics, 2016
Over the last twenty years, several “different” hyperbolic tangent function methods have been proposed to search solutions for nonlinear partial differential equations (NPDEs).
Gözükızıl Ömer Faruk   +2 more
doaj   +1 more source

Schrödinger spectrum generated by the Cornell potential

open access: yesOpen Physics, 2015
The eigenvalues Ednl (a, c) of the d-dimensional Schrödinger equation with the Cornell potential V(r) = −a/r + c r, a, c > 0 are analyzed by means of the envelope method and the asymptotic iteration method (AIM).
Hall Richard L., Saad Nasser
doaj   +1 more source

Some studies on quantum equivalents of non-commutative operators via commutating eigenvalue relation: PT-symmetry

open access: yes, 2023
We study quantum equivalents of non-commutative operators in quantum mechanics. Any matrix "$B$" satisfying the non-commuting relation $[A,B]\neq 0$ with "$A$", can be used via $B^{-1} AB$ to reproduce eigenvalues of "$A$".
Rath, Biswanath
core  

Nonlinear Schrödinger approach to European option pricing

open access: yesOpen Physics, 2017
This paper deals with numerical option pricing methods based on a Schrödinger model rather than the Black-Scholes model. Nonlinear Schrödinger boundary value problems seem to be alternatives to linear models which better reflect the complexity and ...
Wróblewski Marcin
doaj   +1 more source

Electric dipole and quadrupole contributions to valence electron binding in a charge-screening environment

open access: yes, 2018
We make a multipole expansion of the atomic/molecular electrostatic charge distribution as seen by the valence electron up to the quadrupole term. The Tridiagonal Representation Approach (TRA) is used to obtain an exact bound state solution associated ...
Alhaidari, A. D., Bahlouli, H.
core   +1 more source

Supersymmetric quantum mechanics based on higher excited states

open access: yes, 1996
We generalize the formalism and the techniques of the supersymmetric (susy) quantum mechanics to the cases where the superpotential is generated/defined by higher excited eigenstates.
Abramowitz M   +13 more
core   +1 more source

Quantum mechanical calculation of electron spin

open access: yesOpen Physics, 2017
The classical and quantum mechanical methods are used respectively to calculate the electron spin. It is shown that the classical method cannot derive the correct magnetic moment value.
Zhao Hai-Long
doaj   +1 more source

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