  The classical-map hyper-netted-chain (CHNC) scheme, developed for treating
fermion fluids at strong coupling and at finite temperatures, is applied to
electron-electron and electron-hole double quantum wells. The pair distribution
functions and the local field factors needed in linear response theory are
determined for a range of temperatures, carrier densities, and barrier widths
typical for experimental double quantum well systems in GaAs-GaAlAs. For
electron-hole double quantum wells, a large enhancement in the pair
distribution functions is found for small carrier separations. The CHNC
equations for electron-hole systems no longer hold at low densities where
bound-state formation occurs.
