Results 101 to 110 of about 108,427 (203)

Theism and Physical Cosmology [PDF]

, 2010
Physical cosmology purports to establish precise and testable claims about the origin of the universe. Thus, cosmology bears directly on traditional metaphysical claims -- in particular, claims about whether the universe has a creator (i.e. God).
Halvorson, Hans, Kragh, Helge
core  

Versal Transition Scenarios in Inflationary Cosmology: Slow Roll, Ultra-Slow Roll, and Oscillatory Exit

Universe
We develop a physics-facing version of the persistence/transition-variety framework for scalar-field cosmology, which is tailored to inflationary dynamics.
Spiros Cotsakis
doaj   +1 more source

Warm inflation in Weyl geometric gravity

European Physical Journal C: Particles and Fields
We investigate the warm inflationary scenario in Weyl geometric gravity theory, in which the action is constructed by adding matter to the simplest conformally invariant gravitational action in Weyl geometry.
Runhua Huang, Tiberiu Harko, Shi-Dong Liang, Hong-Hao Zhang, Lei Ming   +4 more
doaj   +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

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

Geometrothermodynamic Cosmology. [PDF]

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

Principles, Progress and Problems in Inflationary Cosmology [PDF]

, 2002
Inflationary cosmology has become one of the cornerstones of modern cosmology. Inflation was the first theory within which it was possible to make predictions about the structure of the Universe on large scales, based on causal physics.
Brandenberger, R H
core  

Inflation after COBE: Lectures on inflationary cosmology [PDF]

, 1992
In these lectures I review the standard hot big-bang cosmology, emphasizing its successes, its shortcomings, and its major challenge-a detailed understanding of the formation of structure in the Universe.
Turner, M. S.
core   +1 more source

Frontiers of Inflationary Cosmology

, 2001
After a brief review the theory of cosmological perturbations, I highlight some recent progress in the area of reheating in inflationary cosmology, focusing in particular on parametric amplification of super-Hubble cosmological fluctuations, and on the ...
Brandenberger,Robert H., Brandenberger, Robert H.   +1 more
core   +1 more source