Minimal theory of massive gravity in the light of CMB data and the S-8 tension

Autor(es)

de Araujo, Jose C. N. ^[1] ; De Felice, Antonio ^[2] ; Kumar, Suresh ^{[3, 4]} ; Nunes, Rafael C. ^[1]

Afiliação do(s) autor(es)

^[1] Inst Nacl Pesquisas Espaciais, Div Astrofis, Ave Astronautas 1758, BR-12227010 Sao Jose Dos Campos, SP - Brazil

^[2] Kyoto Univ, Yukawa Inst Theoret Phys, Ctr Gravitat Phys, Kyoto 6068502 - Japan

^[3] BITS Pilani, Dept Math, Pilani Campus, Pilani 333031, Rajasthan - India

^[4] Indira Gandhi Univ, Dept Math, Meerpur 122502, Haryana - India

• Tipo de documento: Artigo Científico
• Fonte: Physical Review D; v. 104, n. 10 NOV 23 2021.
• Citações Web of Science: 0

Resumo

We investigate the minimal theory of massive gravity (MTMG) in the light of different observational datasets that are in tension within the A cold dark matter cosmology. In particular, we analyze the MTMG model, for the first time, with the Planck-cosmic microwave background (CMB) data, and how these precise measurements affect the free parameters of the theory. The MTMG model can affect the CMB power spectrum at large angular scales and cause a suppression on the amplitude of the matter power spectrum. We find that on adding Planck-CMB data, the graviton has a small, positive, but nonzero mass at 68% confidence level, and from this perspective, we show that the tension between redshift space distortions measurements and Planck-CMB data in the parametric space S8 - S2m can be resolved within the MTMG scenario. Through a robust and accurate analysis, we find that the H0 tension between the CMB and the local distance ladder measurements still remains but can be reduced to similar to 3.50- within the MTMG theory. The MTMG is very well consistent with the CMB observations, and undoubtedly, it can serve as a viable candidate among other modified gravity theories. (AU)

• Processo FAPESP: 18/18036-5 - Investigando aspectos físicos além do modelo padrão ligados aos temas de energia escura, gravidade modificada, neutrinos e ondas gravitacionais
• Beneficiário: Rafael da Costa Nunes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/26258-4 - Matéria superdensa no universo
• Beneficiário: Manuel Máximo Bastos Malheiro de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Temático