Constant Roll Inflation in Viscous Mimetic Matter-Geomerty Coupling Gravity

被引：8

作者：

Baffou, E. H. ^{[1
,2
,3
]}

Houndjo, M. J. S. ^{[1
,2
,3
]}

Salako, I. G. ^{[2
,4
]}

Gbetoho, L. D. ^{[3
]}

机构：

[1] UNSTIM, Fac Sci & Tech Natitingou, BP 72, Natitingou, Benin

[2] Inst Math & Sci Phys IMSP, 01 BP 613, Porto Novo, Benin

[3] UNSTIM, Lab Phys & Applicat LPA, Natitingou, Benin

[4] Univ Natl Agr, Dept Phys, 01 BP 55, Porto Novo, Benin

来源：

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2023年 / 62卷 / 09期

关键词：

Inflation; Viscous fluid; Mimetic gravity; Accelerated expansion of the universe; DARK ENERGY; F R; COSMOLOGY; RECONSTRUCTION; CONSTRAINTS; MODELS; F(R;

D O I：

10.1007/s10773-023-05401-0

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate in this work, the inflationary scenario in viscous closed integral( R, T) gravity formalism with mimetic potential and Lagrange multiplier. Considering that our universe contains beside a perfect fluid, a dark energy and a bulk viscous fluid, we obtain through the modified Friedmann equations a main differential equation that may describe the cosmological evolution in viscous mimetic f ( R, T) gravity. For particular choice of the model closed integral( R, T) = R + alpha R-2 + ss T. and for two forms of bulk viscosity coefficient, one as function of the Hubbe parameter H(t) and the other, as density dependent viscosity, we present a numerical results of the inflationary parameters such as the tensor-to-scalar ratio r and the scalar spectral index n(s). A comparison of these results with observational data shows that our model can be used to describe the accelerated expansion of the universe.

引用

页数：11

共 59 条

[1] Improved Constraints on Cosmology and Foregrounds from BICEP2 and Keck Array Cosmic Microwave Background Data with Inclusion of 95 GHz Band [J].

Ade, P. A. R. ;

Ahmed, Z. ;

Aikin, R. W. ;

Alexander, K. D. ;

Barkats, D. ;

Benton, S. J. ;

Bischoff, C. A. ;

Bock, J. J. ;

Bowens-Rubin, R. ;

Brevik, J. A. ;

Buder, I. ;

Bullock, E. ;

Buza, V. ;

Connors, J. ;

Crill, B. P. ;

Duband, L. ;

Dvorkin, C. ;

Filippini, J. P. ;

Fliescher, S. ;

Grayson, J. ;

Halpern, M. ;

Harrison, S. ;

Hilton, G. C. ;

Hui, H. ;

Irwin, K. D. ;

Karkare, K. S. ;

Karpel, E. ;

Kaufman, J. P. ;

Keating, B. G. ;

Kefeli, S. ;

Kernasovskiy, S. A. ;

Kovac, J. M. ;

Kuo, C. L. ;

Leitch, E. M. ;

Lueker, M. ;

Megerian, K. G. ;

Netterfield, C. B. ;

Nguyen, H. T. ;

O'Brient, R. ;

Ogburn, R. W. ;

Orlando, A. ;

Pryke, C. ;

Richter, S. ;

Schwarz, R. ;

Sheehy, C. D. ;

Staniszewski, Z. K. ;

Steinbach, B. ;

Sudiwala, R. V. ;

Teply, G. P. ;

Thompson, K. L. .

PHYSICAL REVIEW LETTERS, 2016, 116 (03)

[2]

Ade P. A. R., 2016, Astron. Astrophys., V594, pA18

[3] Causal field theory with an infinite speed of sound [J].

Afshordi, Niayesh ;

Chung, Daniel J. H. ;

Geshnizjani, Ghazal .

PHYSICAL REVIEW D, 2007, 75 (08)

[4] Modified Gauss-Bonnet gravity with the Lagrange multiplier constraint as mimetic theory [J].

Astashenok, Artyom V. ;

Odintsov, Sergei D. ;

Oikonomou, V. K. .

CLASSICAL AND QUANTUM GRAVITY, 2015, 32 (18)

[5] Exploring a matter-dominated model with bulk viscosity to drive the accelerated expansion of the Universe [J].

Avelino, Arturo ;

Nucamendi, Ulises .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2010, (08)

[6] Inflationary cosmology in f (R, T) modified gravity [J].

Baffou, E. H. ;

Houndjo, M. J. S. ;

Salako, I. G. ;

Houngue, T. .

ANNALS OF PHYSICS, 2021, 434

[7] Late-time cosmological approach in mimetic f (R, T) gravity [J].

Baffou, E. H. ;

Houndjo, M. J. S. ;

Hamani-Daouda, M. ;

Alvarenga, F. G. .

EUROPEAN PHYSICAL JOURNAL C, 2017, 77 (10)

[8]

Baffou E. H., CJPHY D 22 00972

[9]

Baffou E.H., 2014, Space Sci., V355, P2197

[10] Inflationary cosmology in unimodular F(T) gravity [J].

Bamba, Kazuharu ;

Odintsov, Sergei D. ;

Saridakis, Emmanuel N. .

MODERN PHYSICS LETTERS A, 2017, 32 (21)

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