Dust-fluid accelerating flat cosmological models in f (R, T, Lm)-gravity with observational constraints

被引：0

作者：

Pradhan, Anirudh ^{[1
]}

Zeyauddin, M. ^{[2
]}

Dixit, Archana ^{[3
]}

Krishnannair, S. ^{[4
]}

机构：

[1] GLA Univ, Ctr Cosmol Astrophys & Space Sci CCASS, Mathura 281406, Uttar Pradesh, India

[2] Jubail Ind Coll, Dept Gen Studies Math, Jubail Ind City 31961, Saudi Arabia

[3] Gurugram Univ, Dept Math, Gurugram 122003, Haryana, India

[4] Univ Zululand, Dept Math Sci, Private Bag X1001, ZA-3886 Kwa Dlangezwa, South Africa

来源：

INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS | 2025年 / 22卷 / 09期

关键词：

transit universe; equation of state; FLRW universe; observational constraints; f; (R; L-m; T)-gravity; MODIFIED GRAVITY; SUPERNOVAE; REDSHIFT; LAGRANGIANS; STATEFINDER; UNIVERSE; MATTER;

D O I：

10.1142/S0219887825500604

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, we investigate dust-fluid flat cosmological models in the recently proposed modified f(R,T,L-m)-gravity theory. We derive the field equations for the flat FLRW spacetime metric for the arbitrary function f(R,T,L-m) = R /2 + alpha T + beta L-m(n )- gamma, where R is the Ricci curvature scalar, L-m is the matter Lagrangian, T is the trace of the energy-momentum tensor T-ij, and alpha, beta, gamma, and n are the model parameters. We solve these equations to obtain the Hubble function in terms of matter energy density parameters Omega(alpha 0), Omega(beta 0), Omega(gamma 0), and Hubble constant H-0. Then, we use the cosmic chronometer (CC) Hubble points dataset and the Pantheon dataset to do MCMC analysis of the Hubble function and find the best fit model parameters for the lowest chi(2) values. Subsequently, we investigate the effective equation of state parameter omega(eff )and deceleration parameter q(z) for the present past epoch of the universe. We also perform analysis for energy conditions and statefinder parameters to discuss the different stages of the dark energy models.

引用

页数：22

共 139 条

[1] Dark Energy Survey year 1 results: Cosmological constraints from galaxy clustering and weak lensing [J].

Abbott, T. M. C. ;

Abdalla, F. B. ;

Alarcon, A. ;

Aleksic, J. ;

Allam, S. ;

Allen, S. ;

Amara, A. ;

Annis, J. ;

Asorey, J. ;

Avila, S. ;

Bacon, D. ;

Balbinot, E. ;

Banerji, M. ;

Banik, N. ;

Barkhouse, W. ;

Baumer, M. ;

Baxter, E. ;

Bechtol, K. ;

Becker, M. R. ;

Benoit-Levy, A. ;

Benson, B. A. ;

Bernstein, G. M. ;

Bertin, E. ;

Blazek, J. ;

Bridle, S. L. ;

Brooks, D. ;

Brout, D. ;

Buckley-Geer, E. ;

Burke, D. L. ;

Busha, M. T. ;

Campos, A. ;

Capozzi, D. ;

Rosell, A. Carnero ;

Kind, M. Carrasco ;

Carretero, J. ;

Castander, F. J. ;

Cawthon, R. ;

Chang, C. ;

Chen, N. ;

Childress, M. ;

Choi, A. ;

Conselice, C. ;

Crittenden, R. ;

Crocce, M. ;

Cunha, C. E. ;

D'Andrea, C. B. ;

da Costa, L. N. ;

Das, R. ;

Davis, T. M. ;

Davis, C. .

PHYSICAL REVIEW D, 2018, 98 (04)

[2] Planck 2018 results: VI. Cosmological parameters [J].

Aghanim, N. ;

Akrami, Y. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Basak, S. ;

Battye, R. ;

Benabed, K. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Carron, J. ;

Challinor, A. ;

Chiang, H. C. ;

Chluba, J. ;

Colombo, L. P. L. ;

Combet, C. ;

Contreras, D. ;

Crill, B. P. ;

Cuttaia, F. ;

de Bernardis, P. ;

de Zotti, G. ;

Delabrouille, J. ;

Delouis, J. -M. ;

Di Valentino, E. ;

Diego, J. M. ;

Dore, O. ;

Douspis, M. ;

Ducout, A. ;

Dupac, X. ;

Dusini, S. ;

Efstathiou, G. ;

Elsner, F. ;

Ensslin, T. A. ;

Eriksen, H. K. ;

Fantaye, Y. .

ASTRONOMY & ASTROPHYSICS, 2020, 641

[3] Relativistic distortions in the large-scale clustering of SDSS-III BOSS CMASS galaxies [J].

Alam, Shadab ;

Zhu, Hongyu ;

Croft, Rupert A. C. ;

Ho, Shirley ;

Giusarma, Elena ;

Schneider, Donald P. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 470 (03) :2822-2833

[4] Exploring the expanding Universe and dark energy using the statefinder diagnostic [J].

Alam, U ;

Sahni, V ;

Saini, TD ;

Starobinsky, AA .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 344 (04) :1057-1074

[5]

Alfano A. C., ARXIV

[6]

Alfano A. C., 2023, PHYS DARK UNIVERSE, V42

[7] Dynamics of scalar perturbations in f(R, T) gravity [J].

Alvarenga, F. G. ;

de la Cruz-Dombriz, A. ;

Houndjo, M. J. S. ;

Rodrigues, M. E. ;

Saez-Gomez, D. .

PHYSICAL REVIEW D, 2013, 87 (10)

[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] SPECTRA AND HUBBLE SPACE TELESCOPE LIGHT CURVES OF SIX TYPE Ia SUPERNOVAE AT 0.511 < z < 1.12 AND THE UNION2 COMPILATION [J].

Amanullah, R. ;

Lidman, C. ;

Rubin, D. ;

Aldering, G. ;

Astier, P. ;

Barbary, K. ;

Burns, M. S. ;

Conley, A. ;

Dawson, K. S. ;

Deustua, S. E. ;

Doi, M. ;

Fabbro, S. ;

Faccioli, L. ;

Fakhouri, H. K. ;

Folatelli, G. ;

Fruchter, A. S. ;

Furusawa, H. ;

Garavini, G. ;

Goldhaber, G. ;

Goobar, A. ;

Groom, D. E. ;

Hook, I. ;

Howell, D. A. ;

Kashikawa, N. ;

Kim, A. G. ;

Knop, R. A. ;

Kowalski, M. ;

Linder, E. ;

Meyers, J. ;

Morokuma, T. ;

Nobili, S. ;

Nordin, J. ;

Nugent, P. E. ;

Ostman, L. ;

Pain, R. ;

Panagia, N. ;

Perlmutter, S. ;

Raux, J. ;

Ruiz-Lapuente, P. ;

Spadafora, A. L. ;

Strovink, M. ;

Suzuki, N. ;

Wang, L. ;

Wood-Vasey, W. M. ;

Yasuda, N. .

ASTROPHYSICAL JOURNAL, 2010, 716 (01) :712-738

[10] Do consistent F(R) models mimic general relativity plus Λ? [J].

Appleby, Stephen A. ;

Battye, Richard A. .

PHYSICS LETTERS B, 2007, 654 (1-2) :7-12

← 1 2 3 4 5 6 7 8 9 10 →