Weinberg, "Cosmology" (2008), p. 208 The most serious of the above three problems is the horizon problem. As we have seen, there are possible solutions of the flatness and monopole problems that do no rely on inflation. Lyth and Liddle, "The Primordial Density Perturbation" (2009), p. 307 In the modern view, by far the most important function of inflation is to generate the primordial curvature perturbation ... It may generate other primordial perturbations too, including the isocurvature and tensor perturbations ... However, the historical motivation for inflation was rather different, and arose largely on more philosophical grounds concerning the question of whether the initial conditions required for the unperturbed Big Bang seem likely or not. Padmanabhan, "Gravitation: Foundations and Frontiers" (2010), p. 631 Originally inflationary scenarios were suggested as a pseudo-solution to certain pseudo-problems; these are only of historical interest today and the only reason to take the possibility of an inflationary phase in the early universe seriously is because it provides a mechanism for generation the initial perturbations.
Posted on: Sat, 08 Jun 2013 04:45:22 +0000
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