Results 11 to 20 of about 2,199,115 (208)
Hunting extra dimensions in the shadow of Sgr A* [PDF]
Physical Review D, 2022 We show that the observed angular diameter of the shadow of the ultra compact object Sgr A*, favours the existence of an extra spatial dimension. This holds irrespective of the nature of the ultra compact object, i.e., whether it is a wormhole or, a ...
Indrani Banerjee +2 more
semanticscholar +1 more source
Looking for extra dimensions in the observed quasi-periodic oscillations of black holes [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 Quasi-periodic oscillations, often present in the power density spectrum of accretion disk around black holes, are useful probes for the understanding of gravitational interaction in the near-horizon regime of black holes.
Indrani Banerjee +2 more
semanticscholar +1 more source
Gravitational memory and compact extra dimensions [PDF]
Physical Review D, 2021 We develop a general formalism for treating radiative degrees of freedom near I + in theories with an arbitrary Ricci-flat internal space. These radiative modes are encoded in a generalized news tensor which decomposes into gravitational, electromagnetic,
Christian Ferko +2 more
semanticscholar +1 more source
Gravitational wave from extreme mass-ratio inspirals as a probe of extra dimensions [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 The field of gravitational waves is rapidly progressing due to the noticeable advancements in the sensitivity of gravitational-wave detectors that has enabled the detection prospects of binary black hole mergers. Extreme mass-ratio inspiral (EMRI) is one
Mostafizur Rahman +2 more
semanticscholar +1 more source
Anisotropic extra dimensions [PDF]
Physical Review D, 2011 12 pages, no figures, comments and references added, published ...
Papantonopoulos, Eleftherios +2 more
openaire +2 more sources
Thick brane in Rastall gravity
Journal of High Energy Physics, 2022 In this work, thick branes in Rastall gravity are investigated. Three types of maximally symmetric thick brane models are constructed and the linear tensor perturbation is analyzed. In the flat brane model, the tensor modes of the perturbation are either
Yi Zhong, Ke Yang, Yu-Xiao Liu
doaj +1 more source
Hunting for extra dimensions in the shadow of M87* [PDF]
Physical Review D, 2019 The Event Horizon Telescope has recently provided the first image of the dark shadow around the supermassive black hole M87*. The observation of a highly circular shadow provides strong limits on deviations of M87*'s quadrupole moment from the Kerr value.
S. Vagnozzi, L. Visinelli
semanticscholar +1 more source
Large Extra Dimensions from a Small Extra Dimension [PDF]
Journal of High Energy Physics, 2002 Some formulae altered, conclusions ...
Chacko, Z. +3 more
openaire +2 more sources
Gravitational Waves and Extra Dimensions: A Short Review [PDF]
Communications in Theoretical Physics, 2019 We give a brief review on the recent development of gravitational waves in extra-dimensional theories of gravity. Studying extra-dimensional theories with gravitational waves provides a new way to constrain extra dimensions.
Hao-Ran Yu, Zi-Chao Lin, Yu-Xiao Liu
semanticscholar +1 more source
Local Regions with Expanding Extra Dimensions
Physics, 2021 In this paper possible spatial domains, containing expanding extra dimensions, are studied. It is demonstrated that these domains are predicted in the framework of f(R) gravity (where R is the scalar curviture) and could appear due to quantum ...
Kirill A. Bronnikov, Sergey G. Rubin
doaj +1 more source