35 pp.
35 pp.
| 1269 K 35 pp. | |
| View Document | ||
| Title | The Theory of Quantized Fields. III | |
| Author(s) | Schwinger, J. | |
| Publication Date | May 1953 | |
| Report Number | NP-4565 | |
| Unique Identifier | ACC0112 | |
| Other Numbers | OSTI ID: 4368814 | |
| Research Org | Harvard University, Cambridge, Mass. | |
| Contract No | 6N-onr-24806 | |
| Sponsoring Org | US Atomic Energy Commission (AEC) | |
| Subject | Field Theory | |
| Keywords | Physics; Currents; Eigenfunctions; Eigenvalues; Electrodynamics; Electromagnetic Fields; Energy; Field Theory; Mathematics; Momentum; Photons; Quantum Electrodynamics; Quantum Mechanics | |
| Related Web Pages | Julian Schwinger and the Source Theory | |
| Abstract | In this paper we discuss the electromagnetic field, as perturbed by a prescribed current. All quantities of physical interest in various situations, eigenvalues, eigenfunctions, and transformation probabilities, are derived from a general transformation function which is expressed in a non-Hermitian representation. The problems treated are: the determination of the energy-momentum eigenvalues and eigenfunctions for the isolated electromagnetic field, and the energy eigenvalues and eigenfunctions for the field perturbed by a time-independent current that departs from zero only within a finite time interval, and for a time-dependent current that assumes non-vanishing time-independent values initially and finally. The results are applied in a discussion of the intra-red catastrophe and of the adiabatic theorem. It is shown how the latter can be exploited to give a uniform formulation for all problems requiring the evaluation of transition probabilities or eigenvalue displacements. | |
| 1269 K 35 pp. | |
| View Document | ||
