In the standard particle physics model, there is almost no difference between matter and antimatter. But there is an abundance…
In the standard particle physics model, there is almost no difference between matter and antimatter. But there is an abundance of evidence that our observable universe consists only of matter – if there is any antimatter, it would destroy nearby materials to produce very high intensity gamma radiation, which has not been observed. Therefore, physicists think of how we ended up with an abundance of single matter is one of the biggest open questions in particle physics.
Because of this and other gaps in the standard model physicists are considering theories that add some extra particles in ways that help solve the problem. One of these models is called the Two Higgs Doublet Model, which, despite the name, actually adds four additional particles.
This model can be made to match all particle physics observations so far, including those of Large Hadron Collider at CERN, but it was unclear whether it could also solve the problem of imbalance between matter and antimateriel. The research team, led by a Helsinki-based university, proposed to address the problem from another angle. Their results have now been published in a physical Review Letters paper.
About ten picoseconds after the storängen ̵
1; just about the time Higgs boson was on – the universe was a hot plasma of particles.
Dimensional reduction technology allows us to replace the theory that describes this hot plasma with a simpler quantum theory with a set of rules that all particles must follow, “explains Dr. David Weir, the corresponding author of the article.
” It turns out that they heavier, slower particles do not matter so much when these new rules are introduced, so we end up with a much less complicated theory. “
This theory can then be studied with computer simulations that give a clear picture of what happened. In particular, they can tell us how violently out of balance the universe was when Higg’s boson struck. This is important to determine if there was room to produce material antimatter symmetry at this time in the history of the universe using the Two Higgs Doublet Model.
“Our results showed that it is actually possible to explain the absence of antimatters and remain consistent with existing observations,” says Dr. Weir. It was important that, using dimensional reduction, the new approach was completely independent of previous work in this model.
If Higg’s boson was fought in such a violent manner, it would have left the echoes. When the bubbles in the new phase of the universe are core, which clouds and expanded until the universe was like a cloudy sky, the collisions between the bubbles would have produced a lot of gravity waves. Researchers at Helsi ngfors university and elsewhere are now looking for these gravitational waves on behalf of the European LISA project.
Research Report: “Nonperturbative Analysis of the Electroweak Phase Transition of the Two Higgs Doublet Model”
University of Helsinki
Understand time and space
We need your help. SpaceDaily News Network continues to grow, but revenue has never been harder to keep.
With the advent of Ad Blockers and Facebook, our traditional revenue sources continue to decline through quality networking. And unlike so many other news sites, we do not have a paywall – with the annoying usernames and passwords.
Our news coverage takes time and effort to publish 365 days a year.
If you find our news pages informative and useful then please consider becoming a regular supporter or to make a one-time payment.