Results 71 to 80 of about 2,199,115 (208)

Inflation from extra dimensions

AIP Conference Proceedings, 1999
The radial mode of n extra compact dimensions (the radion, b) can cause inflation in theories where the fundamental gravity scale, M, is smaller than the Planck scale M_P. For radion potentials V(b) with a simple polynomial form, to get the observed density perturbations, the energy scale of V(b) must greatly exceed M ~ 1 TeV: V(b)^{1/4} = M_v ~ 10^{-4}
openaire   +2 more sources

Analysis of inflationary models in higher-dimensional uniform inflation

Journal of High Energy Physics
We consider higher-dimensional uniform inflation, in which the extra dimensions expand at the same rate as three-dimensional non-compact space during inflation.
Takuya Hirose
doaj   +1 more source

Non-trivial thick brane realisations with 3-forms

Journal of High Energy Physics
We explore the construction of four-dimensional thick branes supported by massless 3-forms in a five-dimensional bulk space. The required residual Poincaré symmetry on the brane is realised as a combination of the bulk symmetries and the internal gauge ...
Bruno J. Barros, Jose Beltrán Jiménez
doaj   +1 more source

Additional Higgs bosons: Supersymmetry or warped extra dimensions?

Physics Letters B, 2022
We investigate and compare additional CP-even, CP-odd and charged scalar states appearing in two popular Beyond the Standard Model scenarios. We focus on the simplest possible Higgs sector within warped extra-dimensions and supersymmetry, with the aim to
Mariana Frank, Nima Pourtolami, Manuel Toharia   +2 more
doaj   +1 more source

Absorptive extra dimensions [PDF]

Physical Review D, 2003
It is well known that gravity and neutrino oscillation can be used to probe large extra dimensions in a braneworld scenario. We argue that neutrino oscillation remains a useful probe even when the extra dimensions are small, because the brane-bulk coupling is likely to be large.
D. Charuchittipan, C. S. Lam
openaire   +1 more source

CP violation and extra dimensions [PDF]

The European Physical Journal C, 2002
Latex, 7 ...
Huang, C.-S., Li, T., Wei, L., Yan, Q.-S.   +3 more
openaire   +3 more sources

Gravitational echoes from braneworlds

Journal of High Energy Physics
Gravitational echoes can be used to probe the structure of spacetime. In this paper, we investigate the gravitational echoes in different braneworld models in five-dimensional spacetime. We derive the gravitational perturbation equations of these models,
Chun-Chun Zhu, Jing Chen, Wen-Di Guo, Yu-Xiao Liu   +3 more
doaj   +1 more source

Photon mass as a probe to extra dimensions [PDF]

, 2015
In this manuscript we show that the geometrical localization mechanism implies a four dimensional mass for the photon. The consistence of the model provides a mass given exactly by m γ = R / 4 where R is the Ricci scalar.
G. Alencar, C. Muniz, R. R. Landim, I. C. Jardim, R. N. C. Filho   +4 more
semanticscholar   +1 more source

Searching for a dark dimension right-handed neutrino in KATRIN

Journal of High Energy Physics
We study the possibility that the Right-handed neutrino is a five-dimensional state propagating along a micron size extra dimension, as required in the dark dimension proposal.
Ignatios Antoniadis, Auttakit Chatrabhuti, Hiroshi Isono   +2 more
doaj   +1 more source

Search for high-mass diphoton resonances in proton–proton collisions at 13 TeV and combination with 8 TeV search

Physics Letters B, 2017
A search for the resonant production of high-mass photon pairs is presented. The search focuses on spin-0 and spin-2 resonances with masses between 0.5 and 4.5 TeV, and with widths, relative to the mass, between 1.4×10−4 and 5.6×10−2.
V. Khachatryan, A.M. Sirunyan, A. Tumasyan   +2 more
doaj   +1 more source