Gravitational waves will help to understand how the universe to avoid self-destruction

Why all the matter in the Universe was not destroyed in the collision with antimatter? To find the answer will help gravitational waves, believe the researchers. Work gravitational detectors allow to check a tempting hypothesis, in which the universe was saved thanks to the still not open particles and cosmic strings.

As you know, when a particle collides with its antiparticle, they both turn into light. Meanwhile, in the first moments after the Big Bang space was small, and particle collisions had to happen frequently. Whether matter and antimatter are exactly equal, they mutually destroy’d.

Probably, matter somehow formed more than antimatter, the scientists suggest. Accordingly, antimatter is simply not enough to completely destroy his “sister”. From what is left, is all around us.

But why is there an excess of matter? Cosmologists decades are scratching their heads over this problem.

One of the hypotheses suggests the existence of not yet discovered particle is a sterile neutrino. It is believed that such neutrinos most often decay into matter particles than antimatter. If so, then we all consist of “fragments” of ancient sterile neutrinos.

However, the existence of such a particle really is? Scientists would like to test it, initiating her birth. But this will require accelerator many orders of magnitude more powerful than the Large hadron Collider. Therefore, physicists are forced to look for less costly ways.

a New promising method was proposed in a scientific paper published in the journal Physical Review Letters by physicists from Japan, USA and Canada.

In the model, involving the creation of an excess of matter due to sterile neutrinos, is an important detail. The process involves the so-called cosmic strings. This kind of defects in the form of space-time. This can be imagined as a very long, thin and heavy-duty thread.

According to this theory, in the first moments of the Universe life formed a network cosmic strings. Their fluctuations would produce gravitational waves. These waves and it is proposed to seek.

As the authors explain, gravitational waves generated by the vibrations of the strings will be very different from the waves caused by the collision of black holes or other known astrophysical process. So to recognize such a signal will not be easy, if the detectors are sensitive enough to catch it.

According to experts, such observations will be able to design space instruments LISA, BBO and DECIGO.

By the way, before “News.Science” wrote about another study designed to clarify the role of neutrinos in the “salvation of matter”. We also talked about how gravitational waves can be used to search for hidden dimensions of space.

Text: To.Science