Bianchi Type-III Magnetized String Cosmological Models for Perfect Fluid Distribution in f (R,T) Gravity

Rani, Sarita; Singh, J. K.; Sharma, Nidhi

doi:10.1007/s10773-014-2371-7

Cited by 10 publications

(10 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Agrawal and Pawar [30] have studied Bianchi type-V universe model with magnetized domain walls in f (R, T ) theory. Rani et al have obtained magnetized string model (MSM) solutions for Bianchi type III universe in f (R, T ) theory [31]. Ram and Chandel have found dynamics of MSM in f (R, T ) theory for Bianchi type-V metric [32].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetized strange quark matter in f ( R, T ) gravity with bilinear and special form of time varying deceleration parameter

2018

View full text Add to dashboard Cite

In this paper, we have studied homogeneous and anisotropic locally rotationally symmetric (LRS) Bianchi type-I model with magnetized strange quark matter (MSQM) distribution and cosmological constant Λ in f (R, T ) gravity where R is the Ricci scalar and T the trace of matter source. The exact solutions of the field equations are obtained under bilinear and special form of time varying deceleration parameter (DP). Firstly, we have considered two specific forms of bilinear DP with a single parameter of the form: q = α(1−t) 1+t and q = − αt 1+t , which leads to the constant or linear nature of the function based on the constant α. Second one is the special form of the DP as q = −1 + β 1+a β . From the results obtained here, one can observe that in the early universe magnetic flux has more effects and it reduces gradually in the later stage. For t → ∞, we get p → −Bc and ρ → Bc. The behaviour of strange quark matter along with magnetic epoch gives an idea of accelerated expansion of the universe as per the observations of the type Ia Supernovae.The theoretical arguments for the late-time cosmic acceleration are being a major issue among cosmologist of the twentieth century. The idea of this accelerated expansion of universe was discovered nearly 20 years ago by observations through Supernovae Ia [1-5], CMB [6,7], baryon acoustic oscillation (BAO) in galaxy clustering [8][9][10] and WMAP [11] etc. To investigate the nature of the universe, modern cosmology continues to test the above predictions, which leads to the refinement of cosmological models. The nature and behaviour of some unknown mechanism of the universe are responsible for this accelerated expansion, commonly referred as dark energy and contains more energy budget of the universe along with negative pressure. It triggers one of the important issue to study the current acceleration of the universe.Instead of resorting the mysterious concept of dark energy, there is an alternative way to reproduce the dynamics of the expanding universe through modified theories of gravity which is an extension of general relativity. These modifications can occur in several ways such as: one can use a base as the torsional formulation of general relativity called the teleparallel gravity equivalent to general relativity [12] e.g. f (T ) gravity, where T is the torsion scalar. On the other hand one can start the curvature formulation of general relativity in Einstein-Hilbert action by replacing the Ricci scalar with its arbitrary functions or even more complicated curvature invariants such as: f (R), f (R, G) gravity, and the latest f (R, T ) gravity proposed by Harko et al. [13]. The matter Lagrangian of f (R, T ) gravity coupled with Ricci scalar R and trace of energy-momentum tensor T . Such Lagrangian with matter content will differ from the Einstein's one. It has much significance to study late-time cosmic acceleration as well as dark energy and dark matter problem [14][15][16][17]. Hypothetically matter plays more fundamental role in the description of gravitational eff...

show abstract

Section: Introductionmentioning

confidence: 99%

“…(MSM) solutions for Bianchi type III universe in f (R, T ) theory [31]. Ram and Chandel have found dynamics of MSM in f (R, T ) theory for Bianchi type-V metric [32].…”

mentioning

confidence: 99%

Magnetized strange quark matter in f ( R, T ) gravity with bilinear and special form of time varying deceleration parameter

2018

View full text Add to dashboard Cite

show abstract

“…in f (R, T ) gravity [7]. Sharma and Sing investigated the magnetized string model for the Bianchi II metric in f (R, T ) theory [8].…”

Section: Introductionmentioning

confidence: 99%

Magnetized strange quark matter in reconstructed $f(R,T)$ gravity for Bianchi I and V universes with cosmological constant

Aktaş¹

2017

Turk J Phys

View full text Add to dashboard Cite

In this article, we have investigated the behaviors of magnetized strange quark matter distributions for Bianchi I and V universes in reconstructed f (R, T) = α1R+α2f3(T) gravity (here α1 and α2 are constants; f3(T) is an arbitrary function of T). To get solutions of the field equations we have used a deceleration parameter and the equation of state for strange quark matter. The new represented f (R, T) model includes two models of Harko et al. and transforms to general relativity. When t → ∞ , we get the dark energy model (p = −ρ) in reconstructed f (R, T) = α1R + α2f3(T) gravity. However, we obtain zero magnetic field in all f (R, T) gravitation models.

show abstract

“…The simplest Bianchi family is the Bianchi type-I space time that contains the flat FRW universe as a special case. Several authors studied the cosmological models with constant and time dependent displacement field [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. The matter content universe is not expected to attain thermal equilibrium at the time of its evolution, it is evident that there would be heat flow in the universe.…”

Section: Introductionmentioning

confidence: 99%

Bianchi Type-I Cosmological Model with Null Radiation Flow

Singh

Rani

2015

Int J Theor Phys

Self Cite

View full text Add to dashboard Cite

show abstract

Bianchi Type-III Magnetized String Cosmological Models for Perfect Fluid Distribution in f (R,T) Gravity

Cited by 10 publications

References 53 publications

Magnetized strange quark matter in f ( R, T ) gravity with bilinear and special form of time varying deceleration parameter

Magnetized strange quark matter in f ( R, T ) gravity with bilinear and special form of time varying deceleration parameter

Magnetized strange quark matter in reconstructed $f(R,T)$ gravity for Bianchi I and V universes with cosmological constant

Bianchi Type-I Cosmological Model with Null Radiation Flow

Contact Info

Product

Resources

About