No, the double-slit experiment does not prove that the universe only exists as a product of our consciousness. The interpretation and implications of the double-slit experiment have been the subject of philosophical debates and interpretations within the framework of quantum mechanics, but it is important to distinguish between scientific findings and philosophical interpretations.
The double-slit experiment demonstrates the wave-particle duality of particles, such as electrons or photons. When these particles are sent through the double-slit apparatus one at a time, they exhibit an interference pattern on the screen, suggesting that they behave as waves. However, when detectors are placed to determine which slit the particles pass through, the interference pattern disappears, and the particles behave as individual localized particles.
Some interpretations of the double-slit experiment, such as the Copenhagen interpretation, suggest that the act of measurement or observation collapses the wave function and determines the behavior of the particles. This interpretation does not imply that the universe only exists as a product of our consciousness. It merely states that measurement affects the behavior of particles in a way that depends on the experimental setup.
There are various other interpretations of quantum mechanics, such as the many-worlds interpretation or the pilot-wave theory, that provide alternative explanations for the observed phenomena in the double-slit experiment without invoking consciousness as a fundamental factor.
It's important to note that while the double-slit experiment raises interesting questions about the nature of reality and the role of observation, the scientific community does not currently support the notion that the universe exists solely as a product of our consciousness.