I don't understand why the probability density in the double slit experiment in the case of both slits opened, has a minimum corresponding to the maximum of intensity. Shouldn't $P_{12}$ have the same trend as intensity?
Intensity patterns in the double-slit experiment (a)Photon intensity $I_1$ on the screen with slit-1 only opened (b) Photon intensity I_2 with slit2 only opened (c) Interference pattern when both slits were opened d) probability distribution $P_{12}$ of photons when both the slits were opened and when the film was replaced by an array of photon detectors.
The manual says Probability distribution P_12 of photons when both the slits were opened and when the film was replaced by an array of photon detectors