Quantum Electrodynamics at Small Distances
نویسندگان
چکیده
منابع مشابه
Quantum Electrodynamics at Extremely Small Distances
The asymptotics of the Gell-Mann – Low function in QED can be determined exactly, β(g) = g at g → ∞, where g = e is the running fine structure constant. It solves the problem of pure QED at small distances L and gives the behavior g ∼ L. According to Landau, Abrikosov, Khalatnikov [1], relation of the bare charge e0 with the observable charge e in quantum electrodynamics (QED) is given by expre...
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'A sensitive test of the theory of quantum electrodynamics as applied to muons is analyzed in this paper. The test consists of photoproducing mu-pa.irs in hydrogen such that the negative muon is produced at small angles with respect to the incident photon and with nearly all of the available energy. The positive muon and the recoil proton are not detected. The cross section is calculated from t...
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Front form dynamics is not a manifestly rotational invariant formalism. In particular, the requirement of an invariance under rotations around the transverse axes is difficult to fulfill since the corresponding operators are complicated and involve the interaction. All approximations in solving Quantum Field Theories using front form dynamics, as inevitable as they are, are destined to destroy ...
متن کاملQuantum electrodynamics at large distances. II. Nature of the dominant singularities.
Accurate calculations of macroscopic and mesoscopic properties in quantum electrodynamics require careful treatment of infrared divergences: standard treatments introduce spurious large-distances effects. A method for computing these properties was developed in a companion paper. That method depends upon a result obtained here about the nature of the singularities that produce the dominant larg...
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The correspondence principle is important in quantum theory on both the fundamental and practical levels: it is needed to connect theory to experiment, and for calculations in the technologically important domain lying between the atomic and classical regimes. Moreover, a correspondenceprinciple part of the S-matrix is normally separated out in quantum electrodynamics in order to obtain a remai...
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ژورنال
عنوان ژورنال: Physical Review
سال: 1954
ISSN: 0031-899X
DOI: 10.1103/physrev.95.1300