Vacuum Polarisation Tensors in Constant Electromagnetic Fields: Part III
نویسندگان
چکیده
The string-inspired technique is used for a first calculation of the one-loop axialvector vacuum polarisation in a general constant electromagnetic field. A compact result is reached for the difference between this tensor and the corresponding vector vacuum polarisation. This result is confirmed by a Feynman diagram calculation. Its physical relevance is briefly discussed.
منابع مشابه
Vacuum Polarisation Tensors in Constant Electromagnetic Fields: Part I
The string-inspired technique is used for the calculation of vacuum polarisation tensors in constant electromagnetic fields. In the first part of this series, we give a detailed exposition of the method for the case of the QED one-loop N-photon amplitude in a general constant electromagnetic background field. The twopoint cases are calculated explicitly, leading to compact representations for t...
متن کاملVacuum Polarisation Tensors in Constant Electromagnetic Fields: Part II
In the second part of this series we apply the “string-inspired” technique to the calculation of one-loop amplitudes involving both vectors and axialvectors, as well as a general constant electromagnetic background field. The vector-axialvector two-point function in a constant field is calculated explicitly.
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