Can massive gravitons be an alternative to dark energy?

Autor(es)

Alves, M. E. S. ^[1] ; Miranda, O. D. ^[1] ; de Araujo, J. C. N. ^[1]

Afiliação do(s) autor(es)

^[1] INPE Ist Nacl Pesquisas Espaciais, Div Astrofis, BR-12227010 Sao Jose Dos Campos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physics Letters B; v. 700, n. 5, p. 283-288, JUN 20 2011.
• Citações Web of Science: 4

Resumo

In this work, we explore some cosmological implications of the model proposed by M. Visser in 1998. In his approach. Visser intends to take into account mass for the graviton by means of an additional bimetric tensor in the Einstein's field equations. Our study has shown that a consistent cosmological model arises from the Visser's approach. The most interesting feature is that an accelerated expansion phase naturally emerges from the cosmological model, and we do not need to postulate any kind of dark energy to explain the current observational data for distant type la supernovae (SNIa). (C) 2011 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 06/03158-0 - Fundos estocásticos primordiais de ondas gravitacionais
• Beneficiário: Márcio Eduardo da Silva Alves
• Modalidade de apoio: Bolsas no Brasil - Doutorado