Bouncing cosmology in an extended theory of gravity

被引：41

作者：

Tripathy, Sunil Kumar ^{[1
]}

Khuntia, Rakesh Kumar ^{[1
]}

Parida, Priyabrata ^{[1
]}

机构：

[1] Indira Gandhi Inst Technol, Dept Phys, Dhenkanal 759146, Odisha, India

来源：

EUROPEAN PHYSICAL JOURNAL PLUS | 2019年 / 134卷 / 10期

关键词：

UNIVERSE; SUPERNOVAE;

D O I：

10.1140/epjp/i2019-12879-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated some bouncing models in the framework of an extended gravity theory where the usual Ricci scalar in the gravitational action is replaced by the sum of the Ricci scalar and a term proportional to the trace of the energy momentum tensor. The dynamical parameters of the models are derived in a most general manner. We considered two bouncing scenarios described by an exponential and a power law scale factors. The non-singular bouncing models also favour a late time cosmic speed up phenomenon. The dynamical behaviour of the equation of state parameter is studied for the models. It is observed that, near the bounce, the dynamics is substantially affected by the coupling parameter of the modified gravity theory and is least affected by the parameter of the bouncing scale factors.

引用

页数：13

共 72 条

[1] The second data release of the Sloan Digital Sky Survey [J].

Abazajian, K ;

Adelman-McCarthy, JK ;

Agüeros, MA ;

Allam, SS ;

Kurt ;

Anderson, SJ ;

Anderson, SF ;

Annis, J ;

Bahcall, NA ;

Baldry, IK ;

Bastian, S ;

Berlind, A ;

Bernardi, M ;

Blanton, MR ;

Bochanski, JJ ;

Boroski, WN ;

Briggs, JW ;

Brinkmann, J ;

Brunner, RJ ;

Budavári, T ;

Carey, LN ;

Carliles, S ;

Castander, FJ ;

Connolly, AJ ;

Csabai, I ;

Doi, M ;

Dong, F ;

Eisenstein, DJ ;

Evans, ML ;

Fan, XH ;

Finkbeiner, DP ;

Friedman, SD ;

Frieman, JA ;

Fukugita, M ;

Gal, RR ;

Gillespie, B ;

Glazebrook, K ;

Gray, J ;

Grebel, EK ;

Gunn, JE ;

Gurbani, VK ;

Hall, PB ;

Hamabe, M ;

Harris, FH ;

Harris, HC ;

Harvanek, M ;

Heckman, TM ;

Hendry, JS ;

Hennessy, GS ;

Hindsley, RB .

ASTRONOMICAL JOURNAL, 2004, 128 (01) :502-512

[2] Models of collapsing and expanding anisotropic gravitating source in f (R, T) theory of gravity [J].

Abbas, G. ;

Ahmed, Riaz .

EUROPEAN PHYSICAL JOURNAL C, 2017, 77 (07)

[3] Interaction of chiral fields of the dark sector with cold dark matter [J].

Abbyazov, R. R. ;

Chervon, S. V. .

GRAVITATION & COSMOLOGY, 2012, 18 (04) :262-269

[4] σCDM coupled to radiation: Dark energy and Universe acceleration [J].

Abbyazov, Renat R. ;

Chervon, Sergey V. ;

Mueller, Volker .

MODERN PHYSICS LETTERS A, 2015, 30 (26)

[5] Effective gravitational coupling in modified teleparallel theories [J].

Abedi, Habib ;

Capozziello, Salvatore ;

D'Agostino, Rocco ;

Luongo, Orlando .

PHYSICAL REVIEW D, 2018, 97 (08)

[6] 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

[7] Gravitational lensing by f(R, T) gravity [J].

Alhamzawi, Ahmed ;

Alhamzawi, Rahim .

INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2016, 25 (02)

[8] Gravitational waves in f(R, T) and f(R, Tφ) theories of gravity [J].

Alves, M. E. S. ;

Moraes, P. H. R. S. ;

de Araujo, J. C. N. ;

Malheiro, M. .

PHYSICAL REVIEW D, 2016, 94 (02)

[9] Cosmography and constraints on the equation of state of the Universe in various parametrizations [J].

Aviles, Alejandro ;

Gruber, Christine ;

Luongo, Orlando ;

Quevedo, Hernando .

PHYSICAL REVIEW D, 2012, 86 (12)

[10] f(R,T) models applied to baryogenesis [J].

Baffou, E. H. ;

Houndjo, M. J. S. ;

Kanfon, D. A. ;

Salako, I. G. .

EUROPEAN PHYSICAL JOURNAL C, 2019, 79 (02)

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