Inflationary cosmology for f(R, φ) models with different potentials

被引：8

作者：

Zubair, M. ^{[1
]}

Kousar, Farzana ^{[1
]}

机构：

[1] COMSATS Inst Informat Technol Lahore, Dept Math, Lahore, Pakistan

来源：

CANADIAN JOURNAL OF PHYSICS | 2017年 / 95卷 / 11期

关键词：

f(R; phi); gravity; inflation; slow-roll parameters; GENERALIZED GRAVITY; NATURAL INFLATION; PHASE-TRANSITION; PERTURBATIONS; UNIVERSE; SPECTRA; RECONSTRUCTION; EXPANSION; FLATNESS; HORIZON;

D O I：

10.1139/cjp-2017-0075

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine inflation in f(R, phi) theory, where a scalar field is coupled to gravity. We have constructed Rf(phi) models using exponential and power law potentials and study inflation for these models, which can support the early-time acceleration with a useful cosmological constant at high curvature. We have calculated the slow-roll parameters, scalar-to-tensor ratio, and spectral index for these models and analyzed them graphically to check the viability according to recent observational data. We have also presented the evolution of effective equation of state and energy density.

引用

页码：1074 / 1085

页数：12

共 54 条

[1] NATURAL INFLATION - PARTICLE PHYSICS MODELS, POWER-LAW SPECTRA FOR LARGE-SCALE STRUCTURE, AND CONSTRAINTS FROM THE COSMIC BACKGROUND EXPLORER [J].

ADAMS, FC ;

BOND, JR ;

FREESE, K ;

FRIEMAN, JA ;

OLINTO, AV .

PHYSICAL REVIEW D, 1993, 47 (02) :426-455

[2] Planck 2015 results XIII. Cosmological parameters [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Bartolo, N. ;

Battaner, E. ;

Battye, R. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chiang, H. C. ;

Chluba, J. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[3] COSMOLOGY FOR GRAND UNIFIED THEORIES WITH RADIATIVELY INDUCED SYMMETRY-BREAKING [J].

ALBRECHT, A ;

STEINHARDT, PJ .

PHYSICAL REVIEW LETTERS, 1982, 48 (17) :1220-1223

[4]

[Anonymous], 2005, PHYS FDN COSMOLOGY, DOI DOI 10.1017/CBO9780511790553

[5]

[Anonymous], 2009, ARXIV09075424

[6]

Arapoglu A.S., 2015, ARXIV150402192

[7] k-Inflation [J].

Armendáriz-Picón, C ;

Damour, T ;

Mukhanov, V .

PHYSICS LETTERS B, 1999, 458 (2-3) :209-218

[8]

Bamba K, 2015, EUR PHYS J C, V75, DOI 10.1140/epjc/s10052-015-3565-8

[9] Trace-anomaly driven inflation in modified gravity and the BICEP2 result [J].

Bamba, Kazuharu ;

Myrzakulov, R. ;

Odintsov, S. D. ;

Sebastiani, L. .

PHYSICAL REVIEW D, 2014, 90 (04)

[10] The importance of being warm (during inflation) [J].

Bartrum, Sam ;

Bastero-Gil, Mar ;

Berera, Arjun ;

Cerezo, Rafael ;

Ramos, Rudnei O. ;

Rosa, Joao G. .

PHYSICS LETTERS B, 2014, 732 :116-121

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