Results 81 to 90 of about 32,194 (214)

Cosmological Dynamics of Interacting Dark Energy and Dark Matter in f(Q)$f(Q)$ Gravity

Fortschritte der Physik, Volume 73, Issue 5, May 2025.
Abstract In this work, the behavior of interacting dark energy (DE) and dark matter (DM) within a model of f(Q)$f(Q)$ gravity is explored, employing the standard framework of dynamical system analysis. The power‐law f(Q)$f(Q)$ model is considered, incorporating two different forms of interacting DE and DM: 3αHρm$3\alpha H\rho _m$ and α3HρmρDE$\frac ...
Gaurav N. Gadbail, Simran Arora, Phongpichit Channuie, P. K. Sahoo   +3 more
wiley   +1 more source

Direct Detection of the Primordial Inflationary Gravitational Waves

, 2009
Inflationary cosmology is successful in explaining a number of outstanding cosmological issues including the flatness, the horizon and the relic issues.
Mukhanov V. F., Mukhanov V. F., Starobinsky A. A., WEI-TOU NI   +3 more
core   +1 more source

The Structure and Interpretation of Cosmology: Part I - General Relativistic Cosmology

, 2004
The purpose of this work is to review, clarify, and critically analyse modern mathematical cosmology. The emphasis is upon mathematical objects and structures, rather than numerical computations. This paper concentrates on general relativistic cosmology.
Arp, Beem, Besse, Blau, Boothby, Clark, Coles, Cornish, Dubrovin, Ellis, Friedman, Fulton, Gordon McCabe, Heller, Karttunen, Kolb, Layzer, Nicolson, O'Neill, Sachs, Scott, Sneed, Suppe, Suppes, Wolf   +24 more
core   +2 more sources

Principle of «Observability»: Why Cannot the Theory of the Infinite Universe be Realized?

RUDN Journal of Philosophy, 2009
The present work demonstrates that all cosmological theories obey an epistemological relation: all steps cosmology makes in the direction of acquiring the status of a natural science are inversely proportional to its steps in the direction of allowing ...
A N Pavlenko
doaj  

Warm Inflation

Universe, 2016
I show here that there are some interesting differences between the predictions of warm and cold inflation models focusing in particular upon the scalar spectral index n s and the tensor-to-scalar ratio r.
Øyvind Grøn
doaj   +1 more source

Non-commutativity in modified loop cosmology

European Physical Journal C: Particles and Fields
In this study, we explore the pre-inflationary dynamics of the universe using a non-commutative extension of the mLQC-I framework. By incorporating a scalar field potential, we show that key features of Loop Quantum Cosmology (LQC), such as the quantum ...
Abolhassan Mohammadi
doaj   +1 more source

The CWKB Method of Particle Production in Periodic Potential

, 2002
In this work we study the particle production in time dependent periodic potential using the method of complex time WKB (CWKB) approximation. In the inflationary cosmology at the end of inflationary stage, the potential becomes time dependent as well as ...
A. Albrecht, A. D. Doglov, A. D. Dolgov, A. D. Linde, A. D. Linde, H. Fujisaki, H. Fujisaki, I. Chowdhury, J. Guha, J. Traschen, L. A. Kofman, L. A. Kofman, L. D. Landau, M. Yoshimura, N. W. Mac Lahlan, P. Greene, P. Misra, S. Biswas, S. Biswas, S. Biswas, S. Biswas, S. Biswas, S. Biswas, S. Biswas, S. Biswas   +24 more
core   +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

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

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

Beyond the Simplest Inflationary Cosmological Models [PDF]

, 1998
Alexei A. Starobinsky
openalex   +1 more source