Maybe it happens tomorrow. Maybe in a billion years. Physicists have long predicted that the universe may one day collapse, and that everything in it will be compressed to a small hard ball. New calculations from physicists at the University of Southern Denmark now confirm this prediction -- and they also conclude that the risk of a collapse is even greater than previously thought.
Sooner or later a radical shift in the forces of the universe will cause every little particle in it to become extremely heavy. Everything -- every grain of sand on Earth, every planet in the solar system and every galaxy -- will become millions of billions times heavier than it is now, and this will have disastrous consequences: The new weight will squeeze all material into a small, super hot and super heavy ball, and the universe as we know it will cease to exist.
In these years the hunt for new particles is intense. Only a few years ago the Higgs-particle was discovered, and a whole field of research known as high-energy physics is engaged in looking for more new particles. At CP3 several physicists are convinced that the Higgs particle is not an elementary particle, but that it is made up of even smaller particles called techni-quarks. Also the theory of super symmetry predicts the existence of yet undiscovered particles, existing somewhere in the universe as partners for all existing particles. According to this theory there will be a selectron for the electron, a fotino for the photon, etc.
http://www.sciencedaily.com/releases/2013/12/131212113034.htm
Sooner or later a radical shift in the forces of the universe will cause every little particle in it to become extremely heavy. Everything -- every grain of sand on Earth, every planet in the solar system and every galaxy -- will become millions of billions times heavier than it is now, and this will have disastrous consequences: The new weight will squeeze all material into a small, super hot and super heavy ball, and the universe as we know it will cease to exist.
This violent process is called a phase transition and is very similar to what happens when, for example water turns to steam or a magnet heats up and loses its magnetization. The phase transition in the universe will happen if a bubble is created where the Higgs-field associated with the Higgs-particle reaches a different value than the rest of the universe. If this new value results in lower energy and if the bubble is large enough, the bubble will expand at the speed of light in all directions. All elementary particles inside the bubble will reach a mass, that is much heavier than if they were outside the bubble, and thus they will be pulled together and form supermassive centers.
"The latest research shows that the universe's expansion is accelerating, so there is no reason to expect a collapse from cosmological observations. Thus it will probably not be Big Crunch that causes the universe to collapse," says Jens Frederik Colding Krog.
Although the new calculations predict that a collapse is now more likely than ever before, it is actually also possible, that it will not happen at all. It is a prerequisite for the phase change that the universe consists of the elementary particles that we know today, including the Higgs particle. If the universe contains undiscovered particles, the whole basis for the prediction of phase change disappears.
"Then the collapse will be canceled," says Jens Frederik Colding Krog.
In these years the hunt for new particles is intense. Only a few years ago the Higgs-particle was discovered, and a whole field of research known as high-energy physics is engaged in looking for more new particles. At CP3 several physicists are convinced that the Higgs particle is not an elementary particle, but that it is made up of even smaller particles called techni-quarks. Also the theory of super symmetry predicts the existence of yet undiscovered particles, existing somewhere in the universe as partners for all existing particles. According to this theory there will be a selectron for the electron, a fotino for the photon, etc.
http://www.sciencedaily.com/releases/2013/12/131212113034.htm