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Starobinsky originally used the semi-classical Einstein equations with free quantum matter fields. [4] However, it was soon realized that the late time inflation which is relevant for observable universe was essentially controlled by the contribution from a squared Ricci scalar in the effective action [ 5 ] [ 6 ]
Start downloading a Wikipedia database dump file such as an English Wikipedia dump. It is best to use a download manager such as GetRight so you can resume downloading the file even if your computer crashes or is shut down during the download. Download XAMPPLITE from (you must get the 1.5.0 version for it to work). Make sure to pick the file ...
Eternal inflation is a hypothetical inflationary universe model, which is itself an outgrowth or extension of the Big Bang theory. According to eternal inflation, the inflationary phase of the universe's expansion lasts forever throughout most of the universe. Because the regions expand exponentially rapidly, most of the volume of the universe ...
Paul Steinhardt, one of the original architects of the inflationary model, introduced the first example of eternal inflation in 1983. [97] He showed that the inflation could proceed forever by producing bubbles of non-inflating space filled with hot matter and radiation surrounded by empty space that continues to inflate.
Most inflationary models propose a scalar field called the inflaton field, with properties necessary for having (at least) two vacuum states. It is not known exactly when the inflationary epoch ended, but it is thought to have been between 10 −33 and 10 −32 seconds after the Big Bang. The rapid expansion of space meant that any potential ...
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The Inflationary Universe is a popular physics book by theoretical physicist Alan H. Guth, first published in 1997. The book explores the historical and theoretical development and expansion of the theory of inflation , which was first presented by the author in 1979 as the culmination of his research on the implications of theory of the Big Bang .
In 1981, during a seminar by Stephen Hawking on quantum gravity, Linde developed another version of inflationary theory that he called "new inflation". [ citation needed ] He demonstrated that the bubbles not joining up (see page 138 of A Brief History of Time , Chapter 8) could be solved if there was a bubble that contained our region of the ...