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Existed before the Big Bang? Astronomers have discovered a test to narrow


Today, the average age of our universe looks awfully smooth. Too smooth, in fact.

While rapid growth spurt in the space-time can explain what we see, science requires more than good ideas. It needs to prove that drives away the contending arguments. We could finally know where to look for some.

a team of physicists from the Center for Astrophysics | Harvard & Smithsonian (ACF), and Harvard University, returned to the drawing board on the evolution of the early universe, to give us the opportunity to help these models of inflation to stand out from the crowd.

"The current situation with inflation & # 39 is that such a flexible concept, it can not be experimentally falsified," says theoretical physicist Avi Loeb from the FAC.

"Regardless of what people value measurement for some of the observed trait, there is always some models of inflation that can explain it."

We have been convinced for some time that our universe is expanding – its fabric stretched slowly under the influence of a strange "dark" energy.

If we click back in the world until he was 10 or-43 seconds old, we come to the boundary of the fact that our knowledge of physics can handle. By this time? The geometry is so nuts, we just do not know where to start.

Performing calculations ago, we also find the universe would have a radius of 10-10 meters at this crucial time. It sounds tiny, of course, but it is not small enough.

Light echoes from the first moments of the universe are still visible in the form of the cosmic microwave background. Oddly enough, the radiation background looks strange uniform today.

Thermodynamics does this observation is difficult to swallow. Such uniformity is radiation zipping from one end of the universe to another, balancing temperature fluctuations. However, space is expanding too fast to light, to keep up.

For such balancing to be remotely possible radius newborn Universe is a critical time must be less than the value.

This tiny space was permeated early childhood at an exponential rate, blowing up the grain size of the sand a few ten-thousandths of a second.

History neatly fits what we are seeing, but so are other explanations, where the universe is not soon to blow apart at the seams.

"In some alternative theories, the size of the universe contracts. Some do it very slowly, while others do it very quickly, "says Harvard physicist Zhong Zhi Xianyu.

"The attributes of people have offered until now, to measure, as a rule, have problems with the recognition among various theories, because they do not have a direct relationship to the evolution of the initial size of the universe."

Maybe even time existed before the Big Bang? Was it some kind of reverse universe? We invite all comers to them pet theories about how our universe came to look as it does, but only one can be the winner.

To help you decide which ones stay and which ones go, the researchers suggested the use of observable traits that we associate with demanding features based on the models of inflation.

The challenge is knowing how to interpret these observations as a sequence of events. What is needed is some kind of standardized cosmic time stamp to tease the appropriate steps, some of which could potentially eliminate inflation in general.

"If we imagine all the information we have learned so far about what happened before the Big Bang in the modern film roll, the standard hours talking about how these pictures have to play," says CFA's Xingang Chen.

The team proposes a mechanism by which the quantum fluctuations may hint at the sequence of events that are reflected in the wide space structure of the sample.

"These signals are very subtle to detect," says Chen.

"The cosmic microwave background radiation from the & # 39 is one of those places, and the distribution of galaxies other. We have already begun to look for these signals, and there are some interesting candidates already, but we need more data. "

Other cosmology also offered hints to look at the hidden past of our universe in a whirlwind of light and matter in the sky.

Some point to the possible "scars" left black holes in our universe preceding the cosmic microwave background. Others predict we could find evidence that excessive edge physics we call the Big Bang did not happen.

There are many interesting ideas out there that explain how our universe evolved. Now we just need to work out which ones we can throw in a "good idea, shame about the facts" file.

This study was accepted for publication Physical Review Letters,.

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