The nature of dark matter and dark energy is still not fully understood, and their properties remain theoretical. Dark matter and dark energy are distinct concepts, so let's discuss them separately.
Dark Matter: Dark matter is a form of matter that does not interact with electromagnetic radiation, making it invisible to traditional methods of detection. It interacts only through gravitational forces, which is why its presence is inferred from its gravitational effects on visible matter and light. no direct conversion of dark matter into "normal" matter has been observed or documented.
Current theories propose that dark matter consists of particles that are yet to be detected. If such particles exist, it is possible that under certain conditions, they could interact with normal matter, leading to a conversion process. However, the specifics of such conversions are purely hypothetical at this point, and experimental evidence for them is lacking.
Dark Energy: Dark energy is even more enigmatic than dark matter. It is a theoretical form of energy that is thought to permeate all of space and is believed to be responsible for the observed accelerated expansion of the universe. Dark energy does not behave like conventional matter or energy, and its nature is not well understood.
As of my understanding, there are no known mechanisms or documented instances of dark energy converting into "normal" matter or energy. Dark energy is primarily associated with the overall expansion of the universe, and its influence is observed at cosmological scales rather than on individual particles or objects.
It's important to note that the study of dark matter and dark energy is an active area of research, and new discoveries could change our understanding of these phenomena in the future.