Results 101 to 110 of about 724 (182)

A step in flux to suppress axion isocurvature

open access: yesJournal of High Energy Physics
The QCD axion in the pre-inflation scenario faces a stringent isocurvature constraint, which requires a relatively low Hubble scale during inflation. If the axion was heavier than the Hubble scale during inflation, its isocurvature is suppressed and the ...
Priyesh Chakraborty   +3 more
doaj   +1 more source

Effects of the ekpyrotic mechanism on inflationary phase in loop quantum cosmologies

open access: yesEuropean Physical Journal C: Particles and Fields
In bouncing cosmological models – whether classical or quantum – the big bang singularity is replaced by a regular bounce. A well-known challenge is controlling the growth of shear during the contracting phase, as the shear scales as $$a^{-6}$$ a - 6 ...
Christian Brown   +4 more
doaj   +1 more source

A bouncing cosmology from VECROs. [PDF]

open access: yesEur Phys J C Part Fields, 2023
Brandenberger R, Mitchell GA.
europepmc   +1 more source

100 years of mathematical cosmology: Models, theories and problems, Part B. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2022
Cotsakis S, Yefremov AP.
europepmc   +1 more source

Perspectives on fundamental cosmology from Low Earth Orbit and the Moon. [PDF]

open access: yesNPJ Microgravity, 2023
Bertone G, Buchmueller OL, Cole PS.
europepmc   +1 more source

On inflation and torsion in cosmology

open access: yes, 2005
In a recent letter by H. Davoudiasl, R. Kitano, T. Li and H. Murayama ``The new Minimal Standard Model'' (NMSM) was constructed that incorporates new physics beyond the Minimal Standard Model (MSM) of particle physics. The authors follow the principle of minimal particle content and therefore adopt the viewpoint of particle physicists. It is shown that
openaire   +2 more sources

Inflation and Cosmological Perturbations

open access: yes, 2003
23 pages, 7 figures; to be published in "The Future of Theoretical Physics and Cosmology," eds: G.W. Gibbons, E.P.S.
openaire   +2 more sources

An introduction to cosmological inflation

open access: yes, 1999
36 pages LaTeX file, with five figures incorporated using epsf. Page-efficient 2up postscript version (18 pages) at http://icstar5.ph.ic.ac.uk/~andrewl/trieste2up.ps To appear, proceedings of ICTP summer school in high-energy physics ...
openaire   +2 more sources

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