Gor'kov-Hedin-Baym equations for quantum many-body systems with spin-dependent interactions
Abstract
Driven by the need to understand and determine the presence of non-trivial superconductivity in real candidate materials, we present a generalized set of self-consistent Gor'kov-Hedin-Baym equations with spin dependent electron-electron and electron-phonon interactions. This extends Hedin's original equations to treat quantum many-body systems where electronic and lattice correlations along with relativistic effects coexist on the same footing with superconductivity. The leading order self-energies yields a generalization of the Migdal-Eliashberg theory and by iterating this set of equations generalized ladder vertex corrections naturally emerge.
Fields of Study & Subjects
Physics of Superconductivity and Magnetism
Organic and Molecular Conductors Research
Advanced Physical and Chemical Molecular Interactions
Publication details
- Journal / source
- Physical review. B./Physical review. B
- Publisher
- American Physical Society (APS)
- Volume
- 113
- Issue
- 14
- Publication date
- 20 March 2026
- Language
- EN