Results 41 to 50 of about 18,708 (249)
Reports on Progress in Physics, 2004 57 pages, 6 figures, invited review for Rep.
Brax, Philippe +2 more
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Relaxing the W′ Constraint on Compact Extradimension
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 In this paper, we study the constraint on brane tension and compactification scale for models with brane fluctuations using the results from the direct search of W′ at 13 TeV LHC, with an integrated luminosity of 36.1fb−1, in the case for which branon forms the entire cold dark matter.
Mathew Thomas Arun +1 more
wiley +1 more source
European Physical Journal C: Particles and Fields, 2021 We study cosmological inflation and its dynamics in the framework of the Randall–Sundrum II brane model. In particular, we analyze in detail four representative small-field inflationary potentials, namely Natural inflation, Hilltop inflation, Higgs-like ...
Constanza Osses +2 more
doaj +1 more source
Inflationary Universe from Anomaly‐Free F(R)‐Gravity
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 By adding a three‐dimensional manifold to an eleven‐dimensional manifold in supergravity, we obtain the action of F(R)‐gravity and find that it is anomaly‐free. We calculate the scale factor of the inflationary universe in this model and observe that it is related to the slow‐roll parameters.
Aroonkumar Beesham +2 more
wiley +1 more source
String (Gravi)photons, “Dark Brane Photons”, Holography and the Hypercharge Portal
Fortschritte der Physik, Volume 69, Issue 6, June 2021., 2021 Abstract The mixing of graviphotons and dark brane photons to the Standard Model hypercharge is analyzed in full generality, in weakly‐coupled string theory. Both the direct mixing as well as effective terms that provide mixing after inclusion of SM corrections are estimated to lowest order.
P. Anastasopoulos +3 more
wiley +1 more source
Nuclear Physics B, 1999 LaTeX file, 30 pages, 2 eps figures, 1 reference ...
Maggiore, Michele, Riotto, Antonio
openaire +3 more sources
Brane cosmology and the self-tuning of the cosmological constant in the presence of bulk black holes
European Physical Journal C: Particles and Fields, 2020 Motivated by the holographic self-tuning proposal of the cosmological constant, we generalize and study the cosmology of brane-worlds embedded in a higher-dimensional bulk black hole geometry. We describe the equations and matching conditions in the case
P. Betzios, O. Papadoulaki
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Constant-roll inflation in brane induced gravity cosmology
European Physical Journal C: Particles and Fields, 2022 In this article we study a constant-roll inflationary model in the context of the DGP brane-world cosmology caused by a quintessence scalar field. We determine an analytical solution for the Friedman equation coupled to the equation of motion of the ...
A. Ravanpak, G. F. Fadakar
doaj +1 more source
The Ninth Marcel Grossmann Meeting, 2000 A brane universe derived from the Randall-Sundrum models is considered in which an additional Misner-like periodicity is introduced in the extra direction. This model solves the ambiguity in the choice of the brane world by identifying the branes with opposite tensions, in such a way that if one enters the brane with positive tension, one finds oneself
openaire +4 more sources