We know that our universe is developing at an increasingly rapid pace, but what causes this growth remains a mystery. The most likely explanation is that strange powers are nicknamed "dark energy" driving it.
Understanding the nature of dark energy is one of the difficult tasks in fundamental physics.
It has long been believed that string theory will respond accordingly. According to string theory, all matter consists of small, vibrating "stringlike" entities. This theory also requires that there are more spatial measurements than the three that are now part of ordinary information.
For a long time, there were models in string theory that were considered to offer a rise in dark energy. However, this comes for increasingly harsh criticism, and some specialists today state that no model proposed to date has been implemented.
Now, scientists at Uppsala University have devised a model for the Universe, which is expected to solve the puzzle of dark energy. Their study proposes other basic concepts, including dark energy, for the universe that drives bubbles that expand in extra measurements.
This new model with dark energy and our Universe drives bubbles that expand in extra dimensions. The whole universe fits on the edge of this expanding bubble. All the material that exists in the universe is compared to the end of a string that reaches into extra dimensions.
Scientists also point out that expanding such bubbles can appear in the structure of string theory. It's possible that there are more bubbles, related to different universes.
The scientist noted, "This model gives a different new picture of the Universe's creation and future fate, while it can also pave the way for methods of testing string theory."
This study is published in the journal Phys. Rev. Lett.