Alternative to Relativity Theory Explains Galaxy Formation
When it comes to understanding the expansion of the universe and the formation of galaxies, one of the bases scientists use is Einstein's Theory of General Relativity - which has been tested over and over again and consists of one of the most powerful models. solids developed so far to explain the functioning of the cosmos. However, a team of physicists at the University of Durham in England has shown that there may be other models as well.
In addition to General Relativity, there is another theory called “Chameleon” which, as in the traditional model, relies on the 4 fundamental forces - gravity, electromagnetism, weak nuclear force, and strong force - in addition to a hypothetical fifth force. Interestingly, the properties of this theory can be changed according to the circumstances, hence its curious name.
For, according to previous studies, when applied to the Solar System, the Chameleon Theory functions similarly to General Relativity Theory, and now simulations conducted on supercomputers by Durham physicists have pointed out that it can also be applied on larger scales and explain no only the formation of galaxies, like the expansion of the universe.
In their study, scientists focused on supermassive black holes that inhabit the center of the galaxies, as these structures have a huge impact on their formation and development, and gravity - and performed simulations of how the evolution of the universe would be based on theory. Chameleon instead of General Relativity.
More specifically, in their simulations, physicists significantly modified the gravitational force - which, in their research, was called "gravity f (R)" - to test the effects on galaxy formation and found that they would form, rather, with spiral arms like those of the Milky Way, demonstrating that even if the Laws of Physics were different, these structures could still have emerged from the Universe.
It is noteworthy that, according to physicists, simulations do not contradict the Theory of General Relativity. In fact, the study shows that there may be other ways to explain the role of gravity in the evolution of the cosmos - and to find an answer to the question that the universe is expanding faster than it should (as predicted by physics models). ), which is currently a phenomenon attributed to dark energy. Thus, the team intends to apply the Chameleon Theory in new simulations and make observations to test their findings to perhaps unravel some of the mysteries that have intrigued Science long ago.
Alternative to Relativity Theory explains formation of galaxies via TecMundo