TY - Generic
T1 - Many Body Theory of the Formation and Dynamics of Excitons in an Electron-Hole Gas at Low Temperatures
JF - Japanese Journal of Applied Physics
Y1 - 1987
A1 - René Côté
A1 - Griffin, A.
AB - Using functional differentiation to obtain the two-particle Green's functions, we give a systemmatic discussion of the collective modes in an electron-hole gas at low temperatures. Our analysis is based on the well known pairing approximation for the single particle self-energies and corresponds to the generalized RPA. The excitons with finite momentum appear as fluctuations of the electron-hole condensate and have a linear dispersion relation (Keldysh and Kozlov).
ER -