The Jamamadi phytomorphism (Purus, AM): Indigenous Ethnology and plant life
| Grant number: | 13/03798-3 |
| Support type: | Scholarships in Brazil - Post-Doctorate |
| Effective date (Start): | June 01, 2013 |
| Effective date (End): | May 31, 2017 |
| Field of knowledge: | Physical Sciences and Mathematics - Physics |
| Principal Investigator: | Alberto Vazquez Saa |
| Grantee: | Juliano César Silva Neves |
| Home Institution: | Instituto de Matemática, Estatística e Computação Científica (IMECC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil |
| Associated research grant: | 13/09357-9 - Physics and geometry of spacetime, AP.TEM |
Abstract Bouncing cosmologies are a possible solution for the initial singularity problem. The latter is an open issue in the standard inflationary cosmology. Among the several scenarios with a bounce, we intend to study models with a non-minimally coupled scalar field, models of modified gravity f(R) and, mainly, the ekpyrotic universe. The ekpyrotic cosmology has a slowly contracting phase which allow to solve two important problems solved by the inflation: the flatness and homogeneity. Moreover, the new ekpyrotic cosmology has a smooth transition - the bounce - between the contracting and expansion phases avoiding the initial singularity. Another important characteristic in this cosmology beyond the standard cosmology is to provide adiabatic primordial fluctuations in accordance with the cosmic microwave background radiation and a relevant non-Gaussianity in second order perturbations which may be detected in the Planck telescope. An extension of the ekpyrotic model is the cyclic cosmology: a daring attempt to know all the universe history. This project proposes to investigate these bouncing cosmologies, its problems and forecasts. (AU) | |
| Matéria(s) publicada(s) na Agência FAPESP sobre a bolsa: | |
| Before the Big Bang | |