Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-02-15
Braz.J.Phys. 31 (2001) 131-146
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, invited lecture at the XXI Brazilian National Meeting on Particles and Fields, Oct. 23 - 26, 2000, to be published i
Scientific paper
After a brief review of the theory of cosmological perturbations, I highlight some recent progress in the area of reheating in inflationary cosmology, focusing in particular on parametric amplification of super-Hubble cosmological fluctuations, and on the role of noise in the resonance dynamics (yielding a new proof of Anderson localization). I then discuss several important conceptual problems for the current realizations of inflation based on fundamental scalar matter fields, and review some new approaches at solving these problems.
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