Shortcut to Superconductivity by Armen Gulian

Author:Armen Gulian
Language: eng
Format: epub
ISBN: 9783030234867
Publisher: Springer International Publishing

Gauge invariance is an important property of Gor’kov’s equations. Electromagnetic fields may be introduced into the system of (3.100) and (3.101) by the usual operator replacement

(3.115)

depending on whether the space derivatives apply to the function or , respectively (in the same manner the time derivation operator gains the addition of ). The equations for G and may be written as

(3.116)

(3.117)

The functions G, F and in the presence of an external field depend on each of the variables , and under the gauge transformation

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