Gauge Theories for gravitation: foundations and cosmological applications
| Grant number: | 13/26571-4 |
| Support type: | Scholarships abroad - Research Internship - Post-doctor |
| Effective date (Start): | June 01, 2014 |
| Effective date (End): | May 31, 2015 |
| Field of knowledge: | Physical Sciences and Mathematics - Physics |
| Principal Investigator: | Bruto Max Pimentel Escobar |
| Grantee: | Rodrigo Santos Bufalo |
| Supervisor abroad: | Anca Tureanu |
| Home Institution: | Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil |
| Local de pesquisa : | University of Helsinki, Finland |
| Associated to the scholarship: | 11/20653-3 - Higher-order field theory: a study of the generalized scalar electrodynamics, BP.PD |
Abstract In the present research project we will study and explore general features of emergent modified theories of gravity which involve higher-derivatives terms (quadratic in curvature). There are numerous reasons that indicate that General Relativity is in fact an incomplete theory; in particular, its incompatibility with the quantum theory. Therefore, within the framework of field theory, as a criteria of selection it will befirst discussed their renormalizability, and, subsequently, we will perform an Hamiltonian analysis of these modified theories in the Arnowitt-Deser-Misner representation, to determine the theory correct physical degrees of freedom as well as the existence and behavior of ghosts (unstable degrees of freedom), in order to discuss whether these theories are stable in the sense of Ostrogradski. (AU) | |