By Brad Jones
Physicists have proposed a new theory that explains why our universe occupies three spatial dimensions. The idea could offer up some new insight into how the cosmos came to be.
Back to the beginning
An international team of scientists has come up with a new explanation for why space occupies three dimensions. The theory hinges upon flux tubes, which are comprised of quarks held together by gluons.
Current theories suggest that, in its earliest form, our universe was a primordial soup consisting of quarks and gluons. A large quantity of quarks and antiquarkswere being quickly and intensely created and destroyed, which led to the formation of a huge number of flux tubes.
In normal circumstances, a flux tube linking a quark with an antiquark will disappear when the two particles make contact and annihilate one another. However, flux tubes can stabilize and form knots in certain circumstances, like if they become interlinked with one another. If the early universe was filled with such a network of flux tubes, the amount of energy contained within the structure could explain cosmic inflation, or the exponential expansion of the early Universe.
Theoretical frameworks like string theory suggest that our universe might be comprised of nine or ten spatial dimensions, with some of them not visible for various reasons.
However, it’s thought that three-dimensional knots like the ones formed by flux tubes will unravel in higher dimensional spaces. As a result, cosmic inflation would have to have been limited to three dimensions, with any further dimensions being small beyond perception, if they do exist.
At this point, the theory is just a model for what could have happened during the earliest period of our universe’s formation. However, it could explain some burning questions about how the cosmos evolved into its current form. Researchers will continue to develop this concept and how we might better understand this cosmic history with the goal of making predictions about the universe that can be tested, in order to verify its accuracy.
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