Ward identities for particle-particle and particle-hole pairs
Osamu Narikiyo
TL;DR
This paper discusses Ward identities related to charge-density, spin-density, and superconducting fluctuations, highlighting their differences and similarities in condensed matter physics.
Contribution
It provides a comparative analysis of Ward identities for various density fluctuations and superconducting pairs.
Findings
Ward identities for charge and spin fluctuations are derived and compared.
Differences between Ward identities for particle-particle and particle-hole pairs are elucidated.
The paper clarifies the role of Ward identities in understanding fluctuation phenomena.
Abstract
Ward identities for charge-density and spin-density fluctuations are discussed in comparison with those for superconducting fluctuations.
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Taxonomy
TopicsPhysics of Superconductivity and Magnetism · Quantum and electron transport phenomena · Quantum, superfluid, helium dynamics