Journal ArticleDOI
Dynamical analysis of interacting running vacuum models in DGP braneworld
TLDR
In this paper, the dynamical properties of varying vacuum cosmology by considering the interaction between the cosmological fluids are discussed and various functional forms (linear and non-linear) of interaction term and apply dynamical system approach.About:
This article is published in Physics of the Dark Universe.The article was published on 2021-12-01. It has received 4 citations till now. The article focuses on the topics: Inflation (cosmology) & Vacuum energy.read more
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Starobinsky-like inflation and running vacuum in the context of Supergravity
TL;DR: In this paper, the primeval inflationary phase of the early universe was described within a quantum field theoretical framework that can be viewed as the effective action of vacuum decay in the early times.
Phase space analysis of the accelerating multifluid Universe
TL;DR: In this paper, the phase space of a Friedmann-Robertson-Walker universe with various cosmological fluids that may or may not interact is studied, and the physical significance of the resulting fixed points is analyzed.
Journal ArticleDOI
Analyzing stability of five-dimensional Einstein Chern–Simons gravity through dynamical systems
Abdul Jawad,Abdul Malik Sultan +1 more
TL;DR: In this paper , the cosmological solutions of various models in the realm of five-dimensional Einstein Chern-Simons cosmology were investigated in the context of the late-time accelerated universe.
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Journal ArticleDOI
Testing dynamical vacuum models with CMB power spectrum from Planck
Pavlina Tsiapi,Spyros Basilakos +1 more
TL;DR: In this paper, the cosmic expansion is computed for various dynamical vacuum models and confronted to the Cosmic Microwave Background (CMB) power spectrum from Planck, and the results show that all models are very efficient and in very good agreement with the data.
Journal ArticleDOI
Thermodynamic properties of modified gravity theories
TL;DR: In this paper, the second law of thermodynamics in the universe can be met, when the temperature of the outside of the apparent horizon is equivalent to that of the inside of it.
Journal ArticleDOI
Dynamical analysis on $f(R, \mathcal{G})$ cosmology
S. Santos da Costa,Fernando Roig,J. S. Alcaniz,Salvatore Capozziello,M. De Laurentis,Micol Benetti +5 more
Journal ArticleDOI
Dynamics of Einstein–Aether scalar field cosmology
TL;DR: In this paper, the cosmological evolution of the field equations in the context of the Einstein-Aether cosmology was studied by including a scalar field in a spatially flat Friedmann-Lemaitre-Robertson-Walker spacetime.
Journal ArticleDOI
Solving the main cosmological puzzles with a generalized time varying vacuum energy
TL;DR: In this paper, the dynamics of the FLRW flat cosmological models in which the vacuum energy density varies with time were studied. And the authors investigated the dynamical properties of a generalized vacuum model, and found that under certain circumstances the vacuum term in the radiation era varies as Λ(z) ∝ (1 + + + ) 4, while in the matter era it has a constant energy density up to z = 3.
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Stability analysis for cosmological models in $f(R)$ gravity using dynamical system analysis.
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