Massive spin-2 particles in curved backgrounds

• Grant number: 13/25368-0
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: March 01, 2014
• End date: February 28, 2018
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Denis Dalmazi
• Grantee: Hemily Gomes Marciano Fortes
• Host Institution: Faculdade de Engenharia (FEG). Universidade Estadual Paulista (UNESP). Campus de Guaratinguetá. Guaratinguetá , SP, Brazil

Abstract

We investigate the interaction of massive spin-2 particles with a gravitational background. Recently, we have obtained new models for massive spin-2 particles in four dimensions on flat space. Here we check the consistency of such models on curved spaces. Since the gravitational interaction is universal, if massive spin-2 particles do exist, they should couple consistently to the gravitational field. Due to the known difficulties in the quantization of the gravitational field, following the literature, we suppose that gravity is a background field (non-dynamic).By using the new spin-2 models we are able to check the universality (model independence) of the conclusions in the literature drawn solely from the Fierz-Pauli model which is a paradigm for massive spin-2 particles. The non-commuting covariant derivatives give rise to several problems like propagation of non-physical degrees of freedom, constraints on the background geometry, lack of unitarity and causality. Those aspects will be analyzed via equations of motion in curved space, Lagrangian constraints, massive deformation of gauge symmetries and Stueckelberg fields. (AU)

Scientific publications

(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)

DALMAZI, D.; FORTES, H. G. M.. Nonsymmetric tensor description of massive spin-2 particles in a curved background. Physical Review D, v. 95, n. 6, MAR 30 2017. (13/25368-0)

DALMAZI, D.; FORTES, H. G. M.. Nonsymmetric tensor description of massive spin-2 particles in a curved background. PHYSICAL REVIEW D, v. 95, n. 6, p. 13-pg., 2017-03-30. (13/25368-0)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

FORTES, Hemily Gomes Marciano. Massive spin-2 particles in curved spaces. 2018. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Faculdade de Engenharia. Guaratinguetá Guaratinguetá.