Advanced search
Start date
Betweenand

A Hamiltonian analysis of modified theories of gravity

Grant number: 13/26571-4
Support Opportunities:Scholarships abroad - Research Internship - Post-doctor
Start date: June 01, 2014
End date: May 31, 2015
Field of knowledge:Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
Principal Investigator:Bruto Max Pimentel Escobar
Grantee:Rodrigo Santos Bufalo
Supervisor: Anca Tureanu
Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil
Institution abroad: 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)

News published in Agência FAPESP Newsletter about the scholarship:
More itemsLess items
Articles published in other media outlets ( ):
More itemsLess items
VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Scientific publications (8)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
GHASEMKHANI, M.; BUFALO, R.. Higher derivative Chern-Simons extension in the noncommutative QED(3). Physical Review D, v. 91, n. 12, . (13/26571-4)
BUFALO, R.; OKSANEN, M.; TUREANU, A.. How unimodular gravity theories differ from general relativity at quantum level. EUROPEAN PHYSICAL JOURNAL C, v. 75, n. 10, . (13/26571-4)
BUFALO, R.. Born-Infeld electrodynamics in very special relativity. Physics Letters B, v. 746, p. 251-256, . (13/26571-4)
BUFALO, R.; PIMENTEL, B. M.; SOTO, D. E.. Causal approach for the electron-positron scattering in generalized quantum electrodynamics. Physical Review D, v. 90, n. 8, . (13/26571-4, 11/20653-3)
BUFALO, R.; PIMENTEL, B. M.; SOTO, D. E.. Causal approach for the electron-positron scattering in generalized quantum electrodynamics. Physical Review D, v. 90, n. 8, p. 14-pg., . (11/20653-3, 13/26571-4)
GHASEMKHANI, M.; BUFALO, R.. Higher derivative Chern-Simons extension in the noncommutative QED(3). Physical Review D, v. 91, n. 12, p. 11-pg., . (13/26571-4)
BUFALO, R.; TUREANU, A.. Analogy between the Schwarzschild solution in a noncommutative gauge theory and the Reissner-Nordstrom metric. Physical Review D, v. 92, n. 6, p. 8-pg., . (13/26571-4)