No, a remote viewer cannot collapse the wave function in the classic quantum double-slit experiment, at least according to our current understanding of quantum mechanics. The collapse of the wave function is a fundamental process in quantum mechanics that occurs when an observer interacts with a quantum system.
In the double-slit experiment, when particles such as electrons or photons are fired towards a barrier with two slits, they exhibit wave-like behavior and create an interference pattern on a screen behind the barrier. However, when the particles are observed or measured, they behave like particles and create a pattern of two distinct bands corresponding to the two slits.
The collapse of the wave function occurs when a measurement is made. It is a physical process that is influenced by the interaction between the measuring apparatus and the quantum system being observed. The act of observation or measurement disrupts the superposition of possibilities and forces the system to "choose" a particular state.
Remote viewing, on the other hand, refers to a controversial phenomenon where individuals claim to obtain information about distant or unseen targets using extrasensory perception (ESP) or psychic abilities. However, there is no scientific evidence supporting the existence of remote viewing as a reliable and replicable phenomenon.
Since remote viewing does not involve a physical interaction between an observer and a quantum system, it is not considered to have the capability to collapse the wave function in the double-slit experiment or any other quantum mechanical phenomenon.