Compatibility between the scalar field models of tachyon, k-essence and quintessence in f(R, T) gravity

In this paper, we consider the interacting generalized dark energy with cold dark matter and analyze the behavior of evolution parameter via dark energy and interacting parameters. It is found that the evolution parameter crosses the phantom divide line in most of the cases of integration constants. We also establish the correspondence of scalar field models (quintessence, k-essence and dilaton) with this dark energy model in which scalar fields show the increasing behavior. The scalar potential corresponds to attractor solutions in quintessence case.

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Excitation spectra of solitary waves in scalar field models with polynomial self-interaction

Journal of Physics Conference Series ◽

10.1088/1742-6596/675/1/012019 ◽

2016 ◽

Vol 675 (1) ◽

pp. 012019 ◽

Cited By ~ 6

Author(s):

V A Gani ◽

V Lensky ◽

M A Lizunova ◽

E V Mrozovskaya

Keyword(s):

Scalar Field ◽

Solitary Waves ◽

Excitation Spectra ◽

Scalar Field Models

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Field models

Introduction to Quantum Field Theory with Applications to Quantum Gravity ◽

10.1093/oso/9780198838319.003.0004 ◽

2021 ◽

pp. 42-69

Author(s):

Iosif L. Buchbinder ◽

Ilya L. Shapiro

Keyword(s):

Electromagnetic Field ◽

Scalar Field ◽

Spinor Field ◽

Vector Fields ◽

Sigma Model ◽

Complex Scalar ◽

Yang Mills ◽

Scalar Field Models ◽

Complex Scalar Field ◽

Mills Field

This chapter provides constructions of Lagrangians for various field models and discusses the basic properties of these models. Concrete examples of field models are constructed, including real and complex scalar field models, the sigma model, spinor field models and models of massless and massive free vector fields. In addition, the chapter discusses various interactions between fields, including the interactions of scalars and spinors with the electromagnetic field. A detailed discussion of the Yang-Mills field is given as well.

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NEW HOLOGRAPHIC CHAPLYGIN GAS MODEL OF DARK ENERGY

International Journal of Modern Physics D ◽

10.1142/s0218271811018779 ◽

2011 ◽

Vol 20 (03) ◽

pp. 281-297 ◽

Cited By ~ 5

Author(s):

M. MALEKJANI ◽

A. KHODAM-MOHAMMADI

Keyword(s):

Dark Energy ◽

Scalar Field ◽

Chaplygin Gas ◽

Accelerated Expansion ◽

Linear Perturbation ◽

Generalized Chaplygin Gas ◽

Infrared Cutoff ◽

Scalar Field Models ◽

Linear Perturbation Theory ◽

Limiting Case

In this work, we investigate the holographic dark energy model with a new infrared cutoff (new HDE model), proposed by Granda and Oliveros. Using this new definition for the infrared cutoff, we establish the correspondence between the new HDE model and the standard Chaplygin gas (SCG), generalized Chaplygin gas (GCG) and modified Chaplygin gas (MCG) scalar field models in a nonflat universe. The potential and dynamics for these scalar field models, which describe the accelerated expansion of the universe, are reconstructed. According to the evolutionary behavior of the new HDE model, we derive the same form of dynamics and potential for the different SCG, GCG and MCG models. We also calculate the squared sound speed of the new HDE model as well as the SCG, GCG and MCG models, and investigate the new HDE Chaplygin gas models from the viewpoint of linear perturbation theory. In addition, all results in the nonflat universe are discussed in the limiting case of the flat universe, i.e. k = 0.

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