Loss of coherence in double-slit diffraction experiments

By using optical models based on the theory of partially coherent light, and the quantum decoherence model proposed by Joos and Zeh [Z. Phys. B 59, 223 (1985)], we explore incoherence and decoherence in interference phenomena. The problem chosen to study is that of the double-slit diffraction experiment, a paradigmatic example in quantum mechanics. In particular, we perform an analysis of the experiment carried out with cold neutrons by Zeilinger et al. [Rev. Mod. Phys. 60, 1067 (1988).