Particles cannot have no mass and travel at infinite speed according to our current understanding of physics. The behavior of particles in the double-slit experiment is not explained by particles having zero mass and infinite speed but by the principles of quantum mechanics.
In the context of quantum physics, particles are described by wave functions, which are mathematical entities that represent the probabilities of finding a particle in different states. The behavior of particles in the double-slit experiment is understood by considering the wave-like nature of these particles.
When particles such as electrons or photons are sent through the double slits, their wave functions spread out and interfere with each other. This interference leads to the observed interference pattern on the screen. The wave function describes the probability distribution of the particles' positions on the screen.
It's important to note that in quantum mechanics, the term "wave" does not refer to a physical wave in the classical sense. Instead, it represents the probability distribution associated with the particle. The wave function can exhibit interference patterns, similar to how waves in water or sound waves interfere.
Regarding the mass and speed of particles, different particles have different masses, and they cannot travel at or near infinite speeds. In fact, according to Einstein's theory of relativity, no particle with mass can reach or exceed the speed of light in a vacuum.
The behavior of particles in the double-slit experiment is not dependent on their mass or speed. It is primarily a consequence of the wave-like behavior of quantum particles and the interference of their wave functions. The double-slit experiment highlights the fundamental principles of quantum mechanics, such as wave-particle duality and the probabilistic nature of quantum systems, rather than suggesting particles have no mass or can travel at infinite speeds.