The cosmic inflation theory makes two main claims: (1) that there is or was something called an inflaton field (2) that the universe underwent a period of exponential expansion during part of its first second. Cosmic inflation is the idea that the very early universe went through a period of accelerated, exponential expansion during the first 10-35 of a second before settling down to the more sedate rate of expansion we are still experiencing, so that all of the observable universe originated in a small (indeed, microscopic) causally-connected region. The inflation theory proposes a period of extremely rapid (exponential) expansion of the universe during its first few moments it was developed around 1980 to explain several puzzles with the standard big bang theory, in which the universe expands relatively gradually throughout its history.
According to the most accepted theory of the big bang, the early universe underwent a rapid exponential expansion the rapid exponential expansion was termed inflation by american physicist alan guth in 1980. The first inflationary model was proposed by soviet scientist alexei starobinksy but was made famous in the west by physicist alan guth, who theorized that the early universe might have supercooled to allow for exponential growth before the big bang. The big bang theory is the leading explanation about how the universe began at its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 138.
In the most widely accepted cosmological model, called the inflationary model, the universe was born in an instantaneous creation of matter and energy it is the modern equivalent of the old religious dogma of the creation of the world from nothing. The big bang theory david terr, phd 4/10/13 the big bang theory is the currently accepted theory of the origin of the universe according to this theory, the observable universe was formed approximately 138 billion years ago when it. At the workshop we established the now accepted picture of inflation in the very early universe, although it was not confirmed by observation until 10 years later, hawking told today turok urged.
Early universe cosmology is one of the least diverse areas of physics, and losing the nobel prize would have benefited from tackling this disparity and excavating its links with a phenomenon keating importantly highlights: how fears about securing increasingly scarce funding and the job stability that comes with it encourage a kind of conservativism in young researchers. The conformal anomaly, being a short distance effect associated with inflation in the early universe, should not distort the formal structure of einstein's equations at very large distances thus, we expect essentially the same low energy gravitational theory in the present universe. This book can also be read on a more detailed level with the goal of gaining a semi-qualitative understanding of the ideas behind the inflationary period that preceded the standard big bang model and the standard big bang that followed. Autobiography alan h guth september 7, 2014 i was born in new brunswick, new jersey, usa, on february 27, 1947 my parents lived in perth amboy, new jersey, until i was 3 years old, when we moved to highland. Alan guth was one of the first physicists to hypothesize the existence of inflation, which explains how the universe expanded so uniformly and so quickly in the instant after the big bang 138.
According to the inflationary universe scenario the universe in the very early stages of its evolution was exponentially expanding in the unstable vacuumlike state. It is the subject of the theory of inflation, which was developed in the early 1980s by alan guth, andrei linde and others, and has led to a radically new global view of the universe. In 1980, working in the west, alan guth realized that false vacuum decay in the early universe would solve the problem, leading him to propose scalar driven inflation starobinski's and guth's scenarios both predicted an initial desitter phase, differing only in the details of the mechanism.
In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the early universe the inflationary epoch lasted from 10 −36 seconds after the conjectured big bang singularity to sometime between 10 −33 and 10 −32 seconds after the singularity. Alan guth realised that such spontaneous symmetry breaking in the early universe could solve all the problems of the standard big bang if, for a short period at least, the field responsible for this symmetry-breaking got stuck in a so-called metastable state, one verging on stability and non-stability, in which its high energy was. From eternity to here is a popular-level book on cosmology and the arrow of time, published by dutton in january, 2010 for anyone who ever wondered about the nature of time and how it influences our universe, this book is a must read.