Quantum saturation of a Bose gas: Excitons inCu2O

Abstract

Quantum statistics of an ideal gas of Bose particles predicts a phase boundary for Bose-Einstein condensation. The expected relation for the saturated-gas density, n=${\mathrm{CT}}^{3/2}$, is observed for an exciton gas in ${\mathrm{Cu}}_2$O by time resolution of the energy spectrum.