Results 81 to 90 of about 108,427 (203)
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
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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
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Tsallisian Gravity and Cosmology
Advances in High Energy Physics, 2020 In this paper, we adopt the Verlinde hypothesis on the origin of gravity as the consequence of the tendency of systems to increase their entropy and employ the Tsallis statistics.
Kavoos Abbasi, Shirvan Gharaati
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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
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The Fundamental Roles of the de Sitter Vacuum
Universe, 2020 We overview the fundamental roles of the de Sitter vacuum in cosmology where it is responsible for powering the early inflationary stage(s) and the present accelerated expansion, in black hole physics where it provides the existence of a wide class of ...
Irina Dymnikova
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Symmetry analysis in inflationary cosmology [PDF]
AIP Conference Proceedings, 2019 We approach the cosmological inflation thought symmetries of differential equations. We consider the general inflaton field in a homogeneous Friedmann--Lema\^ıtre--Robertson--Walker spacetime and with the use of conformal transformations we are able to write the generic algebraic solution for the field equations.
openaire +2 more sources
Physical consequences of black holes in non-perturbative quantum gravity and inflationary cosmology [PDF]
, 2011 In this thesis the consequences of the presence of a Schwarzschild black hole in de Sitter space are studied in the setting of non-perturbative quantum gravity and in inflationary cosmology.
Sub String Theory Cosmology and ElemPart +2 more
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Inhomogeneities from quantum collapse scheme without inflation
Physics Letters B, 2015 In this work, we consider the problem of the emergence of seeds of cosmic structure in the framework of the non-inflationary model proposed by Hollands and Wald.
Gabriel R. Bengochea +2 more
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Higher derivative D-term inflation in new-minimal supergravity
Physics Letters B, 2014 We revisit the D-term inflation and amend it with ghost-free higher derivative couplings of chiral superfields to super-curvature. These couplings realize a more generic inflationary phase in supergravity.
Iannis Dalianis, Fotis Farakos
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Philosophical Implications of Inflationary Cosmology [PDF]
, 2003 Recent developments in cosmology indicate that every history having a nonzero probability is realized in infinitely many distinct regions of spacetime.
Vilenkin, Alexander +2 more
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