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Now showing items 1-10 of 18

#### Cosmic acceleration with tachyon field

(MODERN PHYSICS LETTERS A, 2018)

In this study, we examine two models of the scalar field, that is, a normal scalar field and a tachyon scalar field in F(R, T, X, phi) gravity to describe cosmic acceleration of the universe, where R, T and X are Ricci ...

#### Inflation and dark energy in f (R, X, phi) gravity

(MODERN PHYSICS LETTERS A, 2018)

In this study, we show the early inflation and the late-time acceleration of the universe in the model R + alpha R-n - beta R2-n + f(X, phi), which shows a minimum connection between geometry and scalar field. Both a ...

#### Cosmic accelerated expansion of the Universe with phantom fluid

(CANADIAN JOURNAL OF PHYSICS, 2019)

The phantom behavior of the Universe is discussed in an extended version of Gauss-Bonnet gravity. Following the method proposed by the author (Int. J. Mod. Phys. D, 27, 1850078. 2018. doi:10.1142/S0218271818500785), we ...

#### Coexistence of early-time inflation and late-time acceleration with scalar fields in theory of F(G, T) gravity

(WORLD SCIENTIFIC PUBL CO PTE LTD, 2018)

In this study, we discuss coexistence of the early-time inflation and the late-time acceleration of the universe in the context of the theory of F(G, T) gravity with scalar field which is minimally coupled with the gravity, ...

#### Super inflation mechanism and dark energy in F(T, T-G) gravity

(ASTROPHYSICS AND SPACE SCIENCE, 2017)

There are various mechanisms that explain both
the inflationary epoch of the early universe and a unification of this epoch with the other stages of the universe. In
this study, we show all the expansion history of the ...

#### Viable super inflation scenario from F(T) modified teleparallel gravity

(EUROPEAN PHYSICAL JOURNAL C, 2018)

Viability of the super inflation scenario is discussed in F(T) modified teleparallel gravity. We calculate the power spectrum of the primordial curvature and tensor perturbations, and we derive two important parameters ...

#### Unified Solutions of Energy-Momentum-Squared Gravity

(Turkish Phys Soc, 2018)

In this study, we realize a unified solution of F(R, T-2) gravity in the context of the spatially flat Friedmann-Robertson-Walker universe, where R is the Ricci curvature scalar and T-2 = T mu nu T mu nu is the scalar ...

#### Unified Solutions of Energy-Momentum-Squared Gravity

(AMER INST PHYSICS, 2018)

In this study, we realize a unified solution of F(R, T-2) gravity in the context of the spatially flat Friedmann-Robertson-Walker universe, where R is the Ricci curvature scalar and T-2 = T mu nu T mu nu is the scalar ...

#### Super inflation mechanism and dark energy from a cosmological entropy perspective

(TURKISH JOURNAL OF PHYSICS, 2018)

Various approaches are developed that provide a unification of the early inflationary epoch of the universe and dark energy (cosmic accelerating expansion case). In one respect, we express this unification in a universal ...

#### Galileon inflation field with three dark eras of the universe

(WORLD SCIENTIFIC PUBL CO PTE LTD, 2020)

In this paper, we discuss possible three early eras of the universe in the theoretical context of the Galilean cosmology. The first phase is a slow-roll inflation phase in which the friction term in the equations of motion ...