Results 91 to 100 of about 1,005 (182)

Clocking the end of cosmic inflation

Journal of Cosmology and Astroparticle Physics
AbstractMaking observable predictions for cosmic inflation requires determining when the wavenumbers of astrophysical interest today exited the Hubble radius during the inflationary epoch. These instants are commonly evaluated using the slow-roll approximation and measured in e-folds ΔN=N-Nend, in reference to the e-foldNendat which inflation ended ...
Pierre Auclair, Baptiste Blachier, Christophe Ringeval   +2 more
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Was there a Big Bang?

Journal of Big History, 2019
The idea that our Universe emerged as a result of the extraordinary power of the Big Bang from singularity (i.e., a state of an infinitely small quantity and infinitely high concentration of matter) is still very popular today.
Leonid Grinin
doaj   +1 more source

Status of the GroundBIRD Telescope

EPJ Web of Conferences, 2018
Our understanding of physics at very early Universe, as early as 10−35 s after the Big Bang, relies on the scenario known as the inflationary cosmology. Inflation predicts a particular polarization pattern in the cosmic microwave background, known as the
Choi J., Génova-Santos R., Hattori M., Hazumi M., Ishitsuka H., Kanno F., Karatsu K., Kiuchi K., Koyano R., Kutsuma H., Lee K., Mima S., Minowa M., Nagai M., Nagasaki T., Naruse M., Oguri S., Okada T., Otani C., Rebolo R., Rubiño-Martín J., Sekimoto Y., Suzuki J., Taino T., Tajima O., Tomita N., Uchida T., Won E., Yoshida M.   +28 more
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Cosmic inflation from fluctuating baby-Skyrme brane

Annals of Physics
14 pages, 3 figures, single column format, the analysis of dynamical system are revised for both high and low energy cases, accepted in Annals of ...
Emir S. Fadhilla, Bobby E. Gunara, Agus Suroso, Ardian N. Atmaja   +3 more
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Significance of Fabry-Perot Cavities for Space Gravitational Wave Antenna DECIGO

Galaxies
DECIGO is a future Japanese project for the detection of gravitational waves in space. To conduct various scientific missions, including the verification of cosmic inflation through the detection of primordial gravitational waves as the main objective ...
Kenji Tsuji, Tomohiro Ishikawa, Kurumi Umemura, Yuki Kawasaki, Shoki Iwaguchi, Ryuma Shimizu, Masaki Ando, Seiji Kawamura   +7 more
doaj   +1 more source

Cosmic inflation in the context of κ-deformed theories

Nuclear Physics B
This paper addresses a new inflationary scenario driven by a slowly-rolling homogeneous scalar field, assuming a generalized potential inspired by Kaniadakis' κ-deformed theory, defined as expκ⁡(x)=(1+κ2x2+κx)1/κ.
B.W. Ribeiro, I.M. Macêdo, F.C. Carvalho   +2 more
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Cosmic Inflation in Metric-Affine Gravity

In the context of metric-affine gravity theories, where the metric and connection are independent, we examine actions involving quadratic terms in the Ricci scalar curvature and the Holst invariant. These actions are non-minimally coupled to a scalar field.
Ioannis D. Gialamas, Kyriakos Tamvakis
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Magnetic Monopoles and Cosmic Inflation

, 2005
10 ...
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Mori-Zwanzig Formalism for Early Cosmic Inflation

Physics of the Dark Universe
24 pages, 16 ...
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Quantum fluctuations and cosmic inflation

, 2005
This thesis addresses two topics: the inflationary perturbation spectrum and preheating after hybrid inflation. Quantum fluctuations in the inflationary universe provide a natural mechanism for the generation of primordial perturbations which seed the formation of cosmic structure.
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