The Bounce only assumes a single bounce event (there may be more, but only one is necessary). Cyclic models include a large number of bounce events (possibly an infinite number).Suekdccia said:If a Big Bounce can occur "after a universal singularity is reached or a repulsive quantum force causes re-expansion" then what differentiates it from oscillatory/cyclic models if both of them defend that the universe will re-expand from a singularity or before that?
https://en.wikipedia.org/wiki/Ultimate_fate_of_the_universe
The main difference between these two models is in their predictions about the fate of the universe. The oscillatory/cyclic model suggests that the universe goes through cycles of expansion and contraction, while the big bounce model proposes that the universe underwent a period of contraction before bouncing back and beginning a new cycle of expansion.
The oscillatory/cyclic model proposes that the universe has always existed and goes through cycles of expansion and contraction. On the other hand, the big bounce model suggests that the universe began with a big bounce, where the universe underwent a period of contraction before expanding again.
Currently, there is no strong evidence to support the oscillatory/cyclic model. It is still a theoretical concept and has not been confirmed by observations or experiments. However, some scientists argue that the cyclic pattern of cosmic microwave background radiation and the distribution of galaxies in the universe could support this model.
The big bounce model is also a theoretical concept and has not been confirmed by observations or experiments. However, some scientists believe that the model could explain certain observations, such as the flatness of the universe and the existence of dark energy. Additionally, some theories in quantum gravity, such as loop quantum cosmology, suggest that a big bounce could occur in the early universe.
Yes, there are other proposed models for the origin of the universe, such as the steady-state model, which suggests that the universe has always existed and is constantly expanding as new matter is created. Another model is the inflationary model, which proposes that the universe underwent a rapid period of expansion in its early stages. However, all of these models are still theoretical and require further studies and evidence to be confirmed.