Deciphering the Mystery of Dark Matter: A Novel Explanation Emerge

The nature of dark matter, an invisible substance comprising approximately 85 percent of all matter in the universe, has long been a subject of debate among physicists. Recent advancements in cosmological models have led to a groundbreaking proposal that combines two seemingly unrelated concepts: cyclic universes and primordial black holes. This innovative framework may hold the key to unraveling the enigma of dark matter.

A Different Kind of Multiverse

The concept of multiple universes is not new, with various theories proposing the existence of parallel realities. However, a more sober and mathematically consistent model suggests that our universe is part of a cyclical multiverse, where each “universe” arises from the ashes of the previous one. This cosmic bounce model proposes that the universe expands, contracts, and then rebounds in an endless cycle.

Surviving the End of a Universe

In this context, researchers have explored the possibility of structures surviving the end of their respective universes and persisting into the next. A study published in Physical Review D suggests that any structure larger than approximately 90 meters could withstand the final collapse of a universe and endure the rebound. These “relics” would not only survive but also seed the formation of giant, unexplained structures observed in the early stages of our present-day universe.

Primordial Black Holes as Dark Matter

The idea that dark matter is comprised of primordial black holes rather than an unknown particle or particles has been gaining traction. However, this theory faces a significant challenge: these small black holes would have to exist from the earliest moments of the universe, long before the first stars could collapse. While there are indications that such objects could exist, a convincing physical mechanism to explain their origin is lacking.

A Universe Born with Black Holes

The newly proposed model, combining cyclic universes and primordial black holes, offers a promising solution. According to this framework, if compact structures can survive the collapse of a universe, then our current universe would have already been born with pre-existing black holes. This theory eliminates the need for finely tuned inflationary processes or extreme fluctuations to generate these objects, instead suggesting that they simply existed from the first instant.

Implications and Future Directions

The implications of this model are profound. If correct, dark matter would not be a mystery of the early universe but rather a legacy of a cosmos that predates our own. While much work remains to be done in testing these ideas against data, the potential for discovery is vast. As researchers continue to explore and refine this theory, we may uncover new insights into the nature of dark matter and the mysteries of the multiverse.

Source: https://www.wired.com/story/dark-matter-may-be-made-of-black-holes-from-another-universe/