Physicist Alexander Vilenkin refuted the hypothesis of the eternal Universe
The mysteries of the cosmos: the Physicist Alexander Vilenkin refuted the hypothesis of the eternal Universe. Director of the Institute of cosmology at tufts University (USA) Alexander Vilenkin proved that all the hypothesis of the «eternal Universe» always existed and not having a moment of «birth», or otherwise controversial, it is spoken in the message of the Physical Institute named Lebedev (Lebedev physical Institute) published on Thursday.
According to the most accepted model of the origin of the Universe, she was born about 14 billion years ago in the Big Bang. With the help of the space probe WMAP (Wilkinson Microwave Anisotropy Probe), who studied the cosmic microwave background radiation, the «echo» of the Big Bang, scientists were able with an accuracy of 1%, or approximately 120 million years, to establish that the universe came 13,75 billion years ago.
However, some other hypotheses, no moment of creation of the Universe cannot be, because it is eternal and has always existed. Professor Vilenkin, speaking at Ginzburg conference on physics, held at the LPI from 28 may to 2 June 2012, showed that all the possible scenarios for the existence of such an eternal Universe sooner or later lead to a contradiction.
According to one such scenario, the universe seems to be eternal and, on average, ever-expanding — the rate of expansion may vary from one region to another, this may occur even periods of compression, but the compression is still kompensiruet extension. In this case, if you try to build the so-called geodetic lines, restoring the «path» of each point of space time ago, it turns out that at least one such line cannot continue infinitely far back into the past — and this, says the scientist, is already enough to prove the fact that the universe has not always existed.
The scenario of oscillating Universe that expands and shrinks according to Vilenkin, rests either in too much entropy a measure of disorder in a system, either in the conclusion that the average such «breathing» the universe is still expanding — and the impossibility of this option the analysis of the first scenario.
The third scenario, which allows to circumvent the problem with eternal expansion, proposed by the cosmologist from South Africa George Ellis. According to Ellis, the eternal, the universe started to expand only in the last 14 billion years, and before that indefinitely was static. However, according to Vilenkin, this hypothesis of a «cosmic egg» is also controversial — this is not expanding the universe for an infinitely long time was to «collapse» to the singular state, which did not happen, the researcher said.