Marcelo Otavio Caminha Gomes

• Abstract

  Petr Horava proposed recently a gravitation theory which is power counting renormalizable. In principle that is a considerable improvement with respect the present situation found in General Relativity. However, Horava's theory is not free from inconsistences and although some of them have been surmounted there are still some objections to be clarified. Thecentral objective of the prese…

  Study and proposals to solve inconsistences in the Horava-Lifshitz's gravitacional theory, AV.BR

• Abstract

  This project is dedicated to the study of some properties of noncommutative quantum field theories. The high nonlocality of these theories is at the root of their many unusual and intriguing features. The following aspects will be investigated: a) conceptual aspects. We will study the consistency of noncommutative field theories focusing both the renormalization and the existence of infra…

  Aspects of the quantum theory of non-commutative fields, AP.TEM

• Abstract

  2+1 dimensional quantum field theories have aroused a great deal of interest in the recent years. Such theories are good theoretical laboratories because they simulate many 3+1 dimensional properties ín a simpler setting. Besides, their peculiar structure motivares applications to the condensed matter physics. This research project focuses the study of methods and applications of 2+1 díme…

  Dynamical Effects of the Chern-Simons Term, AP.TEM

(Only some records are available in English at this moment)

• Abstract

  This project concerns the study of some aspects in quantum field theory, with emphasis in the renormalization group, supersymmetry, 1/N expansion and conformal invariance, that besidesits intrinsic importance in high energy theoretical physics possess interesting connections with statistical mechanics. These studies are organized in three parts according to: perturbative study of the ren…

  Aspects in Field Theory and connections with Statistical Mechanics, BP.PD
• Lorentz symmetry violation and spacetime anisotropy, BP.PD

• Abstract

  This project contains two research themes: one theme is dedicated to the study and development of the Horava-Lifshitz theory of Gravitation, considering consistency and dynamic quantization, while the other deals with no commutative theories applied to a classical model of statistical mechanics. The study of quantum gravity as an emerging theory is also proposed. Possible links between th…

  Effective theories: the Horava-Lifshitz gravitational model and noncommutative theories, BP.PD

(Only some records are available in English at this moment)

• Abstract

  There has been a great amount of interest in the new field of research opened up by the recent discovery of materials known as topologicalinsulators. The work proposed below focuses on the development of effective quantum field theories from which one can understand the stability of the edge states in these materials from the perspective of their bulk. (AU)

  Effective field theory for the bulk-edge correspondence in a topological insulator with Rashba interactions, BE.EP.PD