Results 111 to 120 of about 32,779 (246)

Constraining barrow entropy-based cosmology with power-law inflation. [PDF]

Eur Phys J C Part Fields, 2023
Luciano GG.
europepmc   +1 more source

Approximate reconstruction of inflationary potential with ACT observations

Physics Letters B
The Atacama Cosmology Telescope (ACT) has recently reported updated measurements of the scalar spectral index ns, revealing a tension with the predictions of many conventional inflationary models. In this work, we adopt a parameterization of the spectral
Zhu Yi, Xingzhi Wang, Qing Gao, Yungui Gong   +3 more
doaj   +1 more source

Beyond the Simplest Inflationary Cosmological Models [PDF]

, 1998
Alexei A. Starobinsky
openalex   +1 more source

Time evolution of the equation of state during perturbative reheating and its impact on the inflationary tensor perturbation spectrum

Nuclear Physics B
The spectrum of inflationary tensor perturbations is one of the very few available probes of the post-inflationary reheating epoch, and it is strongly influenced by the Universe's equation of state during this period.
Avirup Ghosh, Deep Ghosh
doaj   +1 more source

Stability Properties of Geometrothermodynamic Cosmological Models. [PDF]

Entropy (Basel), 2023
Beissen N, Abishev M, Khassanov M, Aitassov T, Mamatova S, Toktarbay S.   +5 more
europepmc   +1 more source

WKB approximation for inflationary cosmological perturbations [PDF]

, 2003
Jérôme Martin, Dominik J. Schwarz
openalex   +1 more source

Pre-inflationary dynamics of Starobinsky inflation and its generization in loop quantum Brans-Dicke cosmology [PDF]

, 2019
Wei-Jian Jin, Yongge Ma, Tao Zhu
openalex   +1 more source

Preinflationary Dynamics of Power-Law Potential in Loop Quantum Cosmology †

Universe, 2018
In this article, I mainly discuss the dynamics of the pre-inflationary Universe for the potential V ( ϕ ) ∝ ϕ n with n = 5 / 3 in the context of loop quantum cosmology, in which the big bang singularity is resolved by a non ...
M. Shahalam
doaj   +1 more source

Geometrothermodynamic Cosmology. [PDF]

Entropy (Basel), 2023
Luongo O, Quevedo H.
europepmc   +1 more source

Inflationary models with Gauss–Bonnet coupling in light of ACT observations

European Physical Journal C: Particles and Fields
Recent analyses combining Atacama Cosmology Telescope (ACT) data with other cosmological datasets report a higher scalar spectral index $$n_s$$ n s , creating tension with a wide range of inflationary models.
Yigan Zhu, Qing Gao, Yungui Gong, Zhu Yi
doaj   +1 more source