Results 11 to 20 of about 1,551 (72)

Comment on ``Validity of Feynman's prescription of disregarding the Pauli principle in intermediate states'' [PDF]

open access: yes, 1999
In a recent paper Coutinho, Nogami and Tomio [Phys. Rev. A 59, 2624 (1999); quant-ph/9812073] presented an example in which, they claim, Feynman's prescription of disregarding the Pauli principle in intermediate states of perturbation theory fails.
F. A. B. Coutinho   +2 more
core   +2 more sources

Comment on Solution of the Relativistic Dirac-Morse Problem [PDF]

open access: yes, 2002
We do not think that the relativistic Morse potential problem has been correctly formulated and solved by Alhaidari (Phys. Rev. Lett.
Arvind Narayan Vaidya   +2 more
core   +2 more sources

Negative Energy Solutions and Symmetries [PDF]

open access: yes, 2011
We revisit the negative energy solutions of the Dirac equation, which become relevant at very high energies and study several symmetries which follow therefrom. The consequences are briefly examined.
Burra G.Sidharth
semanticscholar   +1 more source

Comment on "Position-dependent effective mass Dirac equations with PT- symmetric and non - PT- symmetric potentials" [J. Phys. A: Math. Gen. 39 (2006) 11877--11887] [PDF]

open access: yes, 2006
Jia and Dutra (J. Phys. A: Math. Gen. 39 (2006) 11877) have considered the one-dimensional non-Hermitian complexified potentials with real spectra in the context of position-dependent mass in Dirac equation.
Jia C S   +2 more
core   +2 more sources

Lower bound for the ground state energy of the no-pair Hamiltonian [PDF]

open access: yes, 1997
A lower bound for the ground state energy of a one particle relativistic Hamiltonian - sometimes called no-pair operator - is provided.Comment: 5 pages, 1 figure, 1 table, Latex2e (amssymb,amsmath ...
Bethe   +15 more
core   +2 more sources

SCATTERING SOLUTIONS OF THE SPINLESS SALPETER EQUATION [PDF]

open access: yes, 2004
Universite´de Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium~Received 4 February 1998!A method to compute the scattering solutions of a spinless Salpeter equation ~or a Schro¨dinger equation!with a central interaction is presented.
F. Brau, C. Semay
semanticscholar   +1 more source

A weak-value model for virtual particles supplying the electric current in graphene: the minimal conductivity and the Schwinger mechanism

open access: yesNew Journal of Physics, 2014
We propose a model for the electric current in graphene in which electric carriers are supplied by virtual particles allowed by the uncertainty relations.
Kazuhiro Yokota, Nobuyuki Imoto
doaj   +1 more source

Classical Limit of Relativistic Quantum Mechanical Equations in the Foldy-Wouthuysen Representation [PDF]

open access: yes, 2013
It is shown that, under the Wentzel-Kramers-Brillouin approximation conditions, using the Foldy-Wouthuysen representation allows the problem of finding a classical limit of relativistic quantum mechanical equations to be reduced to the replacement of ...
Silenko, A. J.
core   +1 more source

On first order generalized Maxwell equations [PDF]

open access: yes, 2006
The generalized Maxwell equations including an additional scalar field are considered in the first-order formalism. The gauge invariance of the Lagrangian and the equations is broken resulting in the appearance of a scalar field.
S. Kruglov
semanticscholar   +1 more source

Comment on 'Relativistic shape invariant potentials' [PDF]

open access: yes, 2002
In this comment we point out numerous errors in the paper of Alhaidari cited in the title. Key-words: Dirac equation; Dirac-Rosen-Morse; Dirac Eckart. PACS numbers : 03.65.Pm 03.65.Ge (This comment is submitted for publication in J. Phys. A: Math. Gen..)
A. Vaidya, R. L. Rodrigues
semanticscholar   +1 more source

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