Results 11 to 20 of about 1,048 (184)

Cosmic strings and inflation [PDF]

Nuclear Physics B, 1987
Abstract We examine the compatibility of inflation with the cosmic string theory for galaxy formation. There is a general conflict between having sufficient string tension to effect galaxy formation, and reheating after inflation to a high enough temperature that strings may form in a thermal phase transition.
Ethan T. Vishniac, Keith A. Olive, David Seckel   +2 more
openaire   +2 more sources

Hillclimbing inflation in metric and Palatini formulations

Physics Letters B, 2019
A new setup of cosmic inflation with a periodic inflaton potential and conformal factor is discussed in the metric and Palatini formulations of gravity.
Ryusuke Jinno, Kunio Kaneta, Kin-ya Oda, Seong Chan Park   +3 more
doaj   +1 more source

Cosmic Inflation, Quantum Information and the Pioneering Role of John S Bell in Cosmology

Universe, 2019
According to the theory of cosmic inflation, the large scale structures observed in our Universe (galaxies, clusters of galaxies, Cosmic Background Microwave—CMB—anisotropy…) are of quantum mechanical origin. They are nothing but vacuum
Jérôme Martin
doaj   +1 more source

Holography of Little Inflation

Nuclear Physics B, 2015
For several crucial microseconds of its early history, the Universe consisted of a Quark–Gluon Plasma. As it cooled during this era, it traced out a trajectory in the quark matter phase diagram.
Brett McInnes
doaj   +1 more source

Stable small spatial hairs in a power-law k-inflation model

European Physical Journal C: Particles and Fields, 2021
In this paper, we extend our investigation of the validity of the cosmic no-hair conjecture within non-canonical anisotropic inflation. As a result, we are able to figure out an exact Bianchi type I solution to a power-law k-inflation model in the ...
Tuan Q. Do
doaj   +1 more source

Anisotropic inflation in dipolar Bose–Einstein condensates

New Journal of Physics, 2023
Early during the era of cosmic inflation, rotational invariance may have been broken, only later emerging as a feature of low-energy physics. This motivates ongoing searches for residual signatures of anisotropic space-time, for example in the power ...
A Rana, A Pendse, S Wüster, S Panda
doaj   +1 more source

Transplanckian censorship and global cosmic strings

Journal of High Energy Physics, 2017
Large field excursions are required in a number of axion models of inflation. These models also possess global cosmic strings, around which the axion follows a path mirroring the inflationary trajectory. Cosmic strings are thus an interesting theoretical
Matthew J. Dolan, Patrick Draper, Jonathan Kozaczuk, Hiren Patel   +3 more
doaj   +1 more source

Probing the BSM physics with CMB precision cosmology: an application to supersymmetry

Journal of High Energy Physics, 2018
The cosmic history before the BBN is highly determined by the physics that operates beyond the Standard Model (BSM) of particle physics and it is poorly constrained observationally.
Ioannis Dalianis, Yuki Watanabe
doaj   +1 more source

Modulus D-term inflation

Journal of High Energy Physics, 2018
We propose a new model of single-field D-term inflation in supergravity, where the inflation is driven by a single modulus field which transforms non-linearly under the U(1) gauge symmetry.
Kenji Kadota, Tatsuo Kobayashi, Ikumi Saga, Keigo Sumita   +3 more
doaj   +1 more source

Inflation and the Cosmic Microwave Background [PDF]

Astrophysics and Space Science, 1998
7 pages LaTeX file, with two figures incorporated using epsf.
openaire   +4 more sources