How do fundamental particles interact at the quantum level, accounting for forces such as electromagnetism, weak nuclear force, strong nuclear force, and gravity within the framework of advanced physics theories like quantum field theory and general relativity? How do these interactions manifest in phenomena such as particle decay, particle collision, and the behavior of matter under extreme conditions? Furthermore, how do theoretical frameworks such as string theory, loop quantum gravity, and supersymmetry contribute to our understanding of the fundamental forces and particles, and what experimental evidence supports or challenges these theoretical constructs, pushing the boundaries of our understanding in advanced physics?