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Feynman R.P. — Mathematical Formulation of the Quantum Theory of Electromagnetic Interaction
Feynman R.P. — Mathematical Formulation of the Quantum Theory of Electromagnetic Interaction

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Название: Mathematical Formulation of the Quantum Theory of Electromagnetic Interaction

Автор: Feynman R.P.

Аннотация:

The validity of the rules given in previous papers for the solution of problems in quantum electrodynamics
is established. Starting with Fermi's formulation of the field as a set of harmonic oscillators, the effect of
the oscillators is integrated out in the Lagrangian form of quantum mechanics. There results an expression
for the effect of all virtual photons valid to all orders in e'/hc. It is shown that evaluation of this expression
as a power series in e'/hc gives just the terms expected by the aforementioned rules. In addition, a relation is established between the amplitude for a given process in an arbitrary unquantized potential and in a quantum electrodynamical field. This relation permits a simple general statement of
the laws of quantum electrodynamics.
A description, in Lagrangian quantum-mechanical form, of particles satisfying the Klein-Gordon equation is given in an Appendix. It involves the use of an extra parameter analogous to proper time to describe the trajectory of the particle in four dimensions. A second Appendix discusses, in the special case of photons, the problem of finding what real processes are implied by the formula for virtual processes. Problems of the divergences of electrodynamics are not discussed.


Язык: en

Рубрика: Физика/Квантовая теория поля/Квантовая электродинамика/

Статус предметного указателя: Неизвестно

ed2k: ed2k stats

Год издания: 1950

Количество страниц: 18

Добавлена в каталог: 02.09.2005

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