155 citations · 471 across the 25 of their papers we have counts for
25 papers
BCS ansatz for superconductivity in the canonical ensemble and the Pauli exclusion principle
G. Zhu, M. Combescot, O. Betbeder-Matibet
The usual formulation of the BCS ansatz for superconductivity in the grand canonical ensemble makes the handling of the Pauli exclusion principle between paired electrons straightf…
BCS ansatz, Bogoliubov approach to superconductivity and Richardson-Gaudin exact wave function
M. Combescot, W. V. Pogosov, O. Betbeder-Matibet
The Bogoliubov approach to superconductivity provides a strong mathematical support to the wave function ansatz proposed by Bardeen, Cooper and Schrieffer (BCS). Indeed, this ansat…
Fundamental collapse of the exciton-exciton effective scattering
Laura Pilozzi, Monique Combescot, Odile Betbeder-Matibet +1
The exciton-exciton effective scattering which rules the time evolution of two excitons is studied as a function of initial momentum difference, scattering angle and electron-to-ho…
Biexciton oscillator strength
M. Combescot, O. Betbeder-Matibet
Our goal is to provide a physical understanding of the elementary coupling between photon and biexciton and to derive the physical characteristics of the biexciton oscillator stren…
Shiva and Kali diagrams for composite quantum particle many-body effects
M. Combescot, O. Betbeder-Matibet
For half a century, Feynman diagrams have provided an enlightening way of representing many-body effects between elementary fermions and bosons. They however are quite inappropriat…
Third order susceptibility: general formalism for photoinduced current density in semiconductors
M. Combescot, O. Betbeder-Matibet
This paper contains a detailed derivation of the photoinduced current density at third order in the coupling between a semiconductor and a multifrequency photon field, starting fro…