73 citations · 214 across the 19 of their papers we have counts for
20 papers · 1 filter
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…
Ground state energy of N Frenkel excitons
W. V. Pogosov, M. Combescot
By using the composite many-body theory for Frenkel excitons we have recently developed, we here derive the ground state energy of Frenkel excitons in the Born approximation th…
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…
Exciton many-body effects through infinite series of composite-exciton operators
M. Combescot, O. Betbeder-Matibet
We revisit the approach proposed by Mukamel and coworkers to describe interacting excitons through infinite series of composite-boson operators for both, the system Hamiltonian and…
Effect of fermionic components on trion-electron scattering
M. Combescot, O. Betbeder-Matibet, M. A. Dupertuis
To test the validity of replacing a composite fermion by an elementary fermion, we here calculate the transition rate from a state made of one free electron and one trion to a simi…
Closure relations for composite bosons: difference between polaritons and Wannier or Frenkel excitons
M. Combescot, M. A. Dupertuis
We derive the closure relation for polaritons made of three different types of excitons: bosonized excitons, Frenkel or Wannier excitons. In the case of polaritons made of Wann…