Eternal inflation and its implications 4 be shown that Ω tot − 1 grows as Ω tot −1 ∝ t (during the radiation-dominated era) t2/3 (during the matter-dominated era) . I will describe a theorem by Borde, Inflationary Multiverse For a long time, people believed in the cosmological principle, which asserted that the universe is everywhere the same. and A-wordand A-word. Eternal Inflation and String Theory Landscape Andrei Linde. The partition function gives the amplitude of different geometries of the threshold surface in the no-boundary state. For a long time, people believed in the cosmological principle, which asserted that the universe is everywhere the same. Worse, inflation goes on eternally, producing infinitely many outcomes, so the theory makes no firm observational predictions. Steady-State eternal inflation There seems to be no basic problem (AA & Gratton 2002, 2003; also Vilenkin 13) Like any theory describing a physical system, this model has: a) Dynamics (stochastic bubble formation).
pdf. discuss eternal inflation, showing how once inflation starts , it generically continues forever, creating an infinite number of “pocket” universes.
S. W. Hawking1 and Thomas Hertog2 1DAMTP, CMS, Wilberforce Road, CB3 0WA Cambridge, UK 2Institute for Theoretical Physics, University of Leuven, 3001 Leuven, Belgium Abstract The usual theory of in ation breaks down in …
The theory describes how the matter evolved from one form to another as the universe evolved, but the theory does not address the question of how the matter originated. Linde et al [5] described eternal inflation in a particular version of the new inflationary scenario [] where the infla8 - ton potential has a shallow minimum at the top. (2) Dicke and Peebles [6] pointed out that at t = 1 second, for example, when the
Abstract The usual theory of inflation breaks down in eternal inflation. Most people, even physicists, use them fairly interchangeably. Eternal Inflation in Stringy Landscapein Stringy . This principle is no longer required. Scientists debate among (and within) themselves whether these troubles are teething pains or signs of a deeper rot. T h e in flation ary u n iverse A D L in d e I E ... (inflation) th e energy of th e unstable vacuum (of a classical scalar field) transform s into th e energy of hot d en se m atter, an d th e su b seq u en t evolution of th e universe is described by th e usual h o t universe theory. Cosmological perturbations: relativistic theory 2 Let’s focus more on inflation. Various proposals are circulating for ways to fix inflation or replace it. In these theories, the inflation mechanism didn't just happen once immediately following the big bang, but rather happens over and over in different regions of space all of the time.
In this brief communication there is a discussion of the compatibility of Lestone’s heuristic string theory with eternal cosmological inflation. These can be posed as: i) Inflaton field in false vacuum on an infinite null surface J –. Eternal Inflation. This principle is no longer required. At the linear level the inflaton does not excite vector and tensor degrees of freedom; so we will write There is also no anisotropic stress as well, so . quired to start inflation.
This site is like a library, Use search box in the widget to get ebook that you want. 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. eternal inflation Download eternal inflation or read online books in PDF, EPUB, Tuebl, and Mobi Format. Inflation theory brings together ideas from quantum physics and particle physics to explore the early moments of the universe, following the big bang. This is because the physics of eternal in ation speci es initial conditions for classical cosmology. The Inflation Theory proposes a period of extremely rapid (exponential) expansion of the universe during its first few moments. b) “Boundary” conditions. of issues associated with the eternal nature of inflation.
The regime of eternal inflation occurs in the old inflationary theory as well, but there it was considered a major obstacle precluding a con-sistent realization of inflationary cosmology [9 , 10].
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