SLAC-PUB-454 July 1968 QUANTUM ELECTRODYNAMICS: THEOFY
نویسندگان
چکیده
At the last International High Energy Physics Conference in 1966 the speaker on this same topic of quantum electrodynamics concluded with these remarks: ‘IBy now I have strayed very far from the usual energy domain of 10mFIO eV for a high energy conference to 10Wg eV in discussing a missing few tenths of a MHz in the Lamb shift. In fact, both domains are important in probing the detailed behavior of QED at small dis’tances. The high-energy road of large momentum transfer experiments and the low-energy road ,of atomic measurements with extreme precisioli are two complementary routes for making progress toward the same goal. Moreover, there is no unique or theoretically compelling figure of cornparison between experiments in these two domains as to which is probing QED to a smaller distance or to a higher momentum transfer. lfl I call attention to these words and to the fact that I spoke them so that you won’t think that I am here addressing an Atomic Physics Conference by mistake, having wandered out of the wrong end of the SLAC Z-mile accelerator. Quite the contrary quantum electrodynamics which is used as the model and as the only working theory of all elementary particle physics first matured 20 years ago under the stimulus of beautiful experiments in atomic physics, and it is here in precision fine structure and hyperfine structure measurements that we still find much of the action.
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