Ward identities for extended objects
Osamu Narikiyo
TL;DR
This paper discusses Ward identities related to extended objects and proves that, in the dc transport limit, charge-density and spin-density fluctuations are decoupled from electromagnetic fields.
Contribution
It provides a rigorous proof that certain density fluctuations do not couple to electromagnetic fields in the dc transport limit.
Findings
Charge-density and spin-density fluctuations do not couple to electromagnetic fields in dc limit.
Ward identities for extended objects are formulated and analyzed.
Abstract
Ward identities for extended objects are discussed. In the limit of dc transport it is rigorously proved that charge-density and spin-density fluctuations do not couple to electromagnetic field.
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Taxonomy
TopicsQuantum and electron transport phenomena · Quantum, superfluid, helium dynamics · Advanced Chemical Physics Studies