Results 71 to 80 of about 32,779 (246)
RECENT PROGRESS IN INFLATIONARY COSMOLOGY [PDF]
COSMO-97, 1998 We discuss two important modifications of inflationary paradigm. Until very recently we believed that inflation automatically leads to flatness of the universe, Omega = 1. We also thought that post-inflationary phase transitions in GUTs may occur only after thermalization, which made it very difficult to have baryogenesis in GUTs and to obtain ...
openaire +2 more sources
A Possible Solution to the Mystery of the ANITA Anomalous Events
Annalen der Physik, Volume 538, Issue 4, April 2026.In 2006 and 2014, the Antarctic Impulsive Transient Antenna (ANITA), a balloon‐borne radio observatory flying over Antarctica, detected two strange upward‐going radio pulse events that have not yet been explained by our current understanding of physics.
Massimo Villata
wiley +1 more source
Viable Inflationary Evolution from Loop Quantum Cosmology Scalar-Tensor Theory [PDF]
, 2018 In this work we construct a bottom-up reconstruction technique for Loop Quantum Cosmology scalar-tensor theories, from the observational indices. Particularly, the reconstruction technique is based on fixing the functional form of the scalar-to-tensor ...
de Haro, Jaume +2 more
core +3 more sources
WMAP normalization of inflationary cosmologies [PDF]
Physical Review D, 2006 We use the three-year WMAP observations to determine the normalization of the matter power spectrum in inflationary cosmologies. In this context, the quantity of interest is not the normalization marginalized over all parameters, but rather the normalization as a function of the inflationary parameters n and r with marginalization over the remaining ...
Liddle, Andrew R. +3 more
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Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
Inflationary universe in the presence of a minimal measurable length
, 2017 In this paper, we will study the effect of having a minimum measurable length on inflationary cosmology. We will analyze the inflationary cosmology in the Jacobson approach.
Aghamohammadi, A. +5 more
core +1 more source
Viscous Cosmology for Early- and Late-Time Universe [PDF]
, 2017 From a hydrodynamicist's point of view the inclusion of viscosity concepts in the macroscopic theory of the cosmic fluid would appear most natural, as an ideal fluid is after all an abstraction (excluding special cases such as superconductivity).
Brevik, Iver +4 more
core +3 more sources
Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.Abstract The fractal dimensions of lava flow margins on Earth often correlate with their flow morphologies and have been used to tentatively identify flow morphology on other rocky planets where fine‐scale observations are limited. Previous studies of lava flow margins on Venus have reported fractal dimensions (D) mostly within the range between 1.05 ...
E. M. Recchuiti +3 more
wiley +1 more source
Physics Letters B, 2019 Combining intervals of ekpyrotic (ultra-slow) contraction with a (non-singular) classical bounce naturally leads to a novel cyclic theory of the universe in which the Hubble parameter, energy density and temperature oscillate periodically, but the scale ...
Anna Ijjas, Paul J. Steinhardt
doaj +1 more source
Postinflationary scalar tensor cosmology and inflationary parameters [PDF]
Physical Review D, 2018 19 pages, 2 figures. References added, minor changes.
Maharana, Anshuman, Zavala, Ivonne
openaire +4 more sources