Results 1 to 10 of about 2,267,527 (201)

Hidden symmetries from extra dimensions

open access: yesJournal of High Energy Physics
In Kaluza-Klein compactifications, some symmetries of the higher dimensional theory are preserved in lower dimensions, others are broken, and occasionally, there are symmetry enhancements.
Marco Ciafardini   +3 more
doaj   +1 more source

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

open access: yesPhysics 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   +2 more
doaj   +1 more source

Primordial Black Holes from Spatially Varying Cosmological Constant Induced by Field Fluctuations in Extra Dimensions

open access: yesUniverse
The origin and evolution of supermassive black holes (SMBHs) in our universe have sparked controversy. In this study, we explore the hypothesis that some of these black holes may have seeded from the direct collapse of dark energy domains with density ...
Arkady A. Popov   +2 more
doaj   +1 more source

Extra Dimensions in Quantum Newtonian Cosmology

open access: yesEncyclopedia
This entry surveys the role of extra dimensions in Newtonian quantum cosmology, with particular emphasis on large, compactified, and warped dimensional geometries and their impact on the Newtonian potential in the early universe.
Robert Colson Sapp, Jeffery A. Secrest
doaj   +1 more source

Proof of dispersion relations for the amplitude in theories with a compactified space dimension

open access: yesJournal of High Energy Physics, 2020
The analyticity properties of the scattering amplitude in the nonforward direction are investigated for a field theory in the manifold R 3,1 ⨂ S 1.
Jnanadeva Maharana
doaj   +1 more source

Exploring extra dimensions through inflationary tensor modes

open access: yesJournal of High Energy Physics, 2018
Predictions of inflationary schemes can be influenced by the presence of extra dimensions. This could be of particular relevance for the spectrum of gravitational waves in models where the extra dimensions provide a brane-world solution to the hierarchy ...
Sang Hui Im   +2 more
doaj   +1 more source

Constraining extra dimensions using observations of black hole quasi-normal modes. [PDF]

open access: yesEur Phys J C Part Fields, 2022
Mishra AK, Ghosh A, Chakraborty S.
europepmc   +1 more source

Extra dimensions hypothesis in high energy physics

open access: yesEPJ Web of Conferences, 2017
We discuss the history of the extra dimensions hypothesis and the physics and phenomenology of models with large extra dimensions with an emphasis on the Randall- Sundrum (RS) model with two branes. We argue that the Standard Model extension based on the
Volobuev Igor   +4 more
doaj   +1 more source

Searches for power-law warped extra dimensions

open access: yesJournal of High Energy Physics
Extra dimensions with a bulk dilaton field can be power-law warped, unlike the exponential warping in the Randall-Sundrum (RS) model. We show that this mildly warped extra dimension can address the hierarchy problem with a novel Kaluza-Klein (KK ...
Sang Hui Im, Krzysztof Jodłowski
doaj   +1 more source

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