. Exact Inflationary Solutions ... Figure from A. Albrecht and P.
Steinhardt ... Even in the simplest case results hard to find a solution. Sergio del ...
Introduction Exact solutions Spectral perturbations Aplication Conclusions and remarks
Exact Inflationary Solution Sergio del Campo Instituto de F´ısica Pontificia Universidad Cat´ olica de Valpara´ıso
Chile I CosmoSul Rio de Janeiro, 1 al 5 de Agosto, 2011
Sergio del Campo
[email protected]
Exact Inflationary Solutions
Introduction Exact solutions Spectral perturbations Aplication Conclusions and remarks
Models The field equations Slow-roll approximation Successes and Problems
Inflation as a paradigm.
Idea of inflation The universe underwent a quasi exponential expansion at early history: In 10−35 S, a Planck size region blows up to a factor of 1030 !
Sergio del Campo
[email protected]
Exact Inflationary Solutions
Introduction Exact solutions Spectral perturbations Aplication Conclusions and remarks
Models The field equations Slow-roll approximation Successes and Problems
Inflation as a paradigm.
Idea of inflation The universe underwent a quasi exponential expansion at early history:
What cause inflation? Scalar field φ (Usually called the inflaton field).
In 10−35 S, a Planck size region blows up to a factor of 1030 !
Sergio del Campo
[email protected]
V (φ)
Dynamic of φ (The scalar field rolls down the scalar potential)
Exact Inflationary Solutions
Introduction Exact solutions Spectral perturbations Aplication Conclusions and remarks
Models The field equations Slow-roll approximation Successes and Problems
Models for inflation Guths original idea (1981) - Used the entropy point of view. Figure from A. Albrecht and P. Steinhardt, Phys. Rev. D, 48, 1220 (1981).
Sergio del Campo
[email protected]
Exact Inflationary Solutions
Introduction Exact solutions Spectral perturbations Aplication Conclusions and remarks
Models The field equations Slow-roll approximation Successes and Problems
Models for inflation Guths original idea (1981) - Used the entropy point of view. Figure from A. Albrecht and P. Steinhardt, Phys. Rev. D, 48, 1220 (1981).
Now, (even in eternal inflation!) people prefer a chaotic type. No supercooling/tunneling from false vacuum. No plateau (in the scalar potential). No thermal equilibrium. Sergio del Campo
[email protected]
Exact Inflationary Solutions
Introduction Exact solutions Spectral perturbations Aplication Conclusions and remarks
Models The field equations Slow-roll approximation Successes and Problems
Inflation in the abstract Inflation is an add-on to the standard Big-Bang scenario.
Sergio del Campo
[email protected]
Exact Inflationary Solutions
Introduction Exact solutions Spectral perturbations Aplication Conclusions and remarks
Models The field equations Slow-roll approximation Successes and Problems
Inflation in the abstract Inflation is an add-on to the standard Big-Bang scenario. Following equivalent descriptions hold: An era of accelerated expansion, ¨a > 0 An era of shrinking horizon d 1 ¨a ≡− 2
