Characteristics of the decay distribution of spontaneous emission from an assembly of atoms in photonic crystals with pseudogaps

The characteristics of the decay distribution of spontaneous emission from an assembly of atoms in photonic crystals with pseudogaps are described.Calculations show that quite wide or narrow lifetime distributions can occur for different spreading configurations of the atoms.The pure photonic crystal effects may lead to coexistence of both accelerated and inhibited decay processes.Our results clarify theoretically the substantial discrepancies in recent reported experiments.