Gravity at the tip of the throat



Bento, Bruno Valeixo, Chakraborty, Dibya, Parameswaran, Susha and Zavala, Ivonne
(2022) Gravity at the tip of the throat. JOURNAL OF HIGH ENERGY PHYSICS, 2022 (9). 208-.

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Abstract

<jats:title>A<jats:sc>bstract</jats:sc> </jats:title><jats:p>We study the gravitational signatures that arise from compactifying Type IIB supergravity on a compact space containing a Klebanov-Strassler warped throat. After reviewing the dimensional reduction of the 10d graviton and explicitly obtaining the equa- tions of motion for the 4d tensor <jats:italic>h</jats:italic><jats:sub><jats:italic>μν</jats:italic></jats:sub>, vector <jats:italic>h</jats:italic><jats:sub><jats:italic>μn</jats:italic></jats:sub> and scalar <jats:italic>h</jats:italic><jats:sub><jats:italic>mn</jats:italic></jats:sub> modes, we find the masses and wavefunctions of the Kaluza-Klein tower of spin-2 states. We explore how the masses and wavefunctions depend on the balance between the strength of the warping and the size of the bulk, and how these relate to the range and strength of the interactions which correct the Newtonian gravitational potential. By computing the modified Newtonian potential for sources on a brane somewhere along the throat, and applying consistency constraints on the Klebanov-Strassler parameters, we obtain predictions for the phenomenological pa- rameter space. In the case of a fully warped throat, and depending on where the brane is along the throat, these predictions are narrow in range and consistent with current obser- vational and experimental constraints. We also begin an exploration of gravitational wave signatures of KK gravitons in warped throats, finding that strong warping can bring the corresponding frequencies down to the windows of current and proposed experiments.</jats:p>

Item Type: Article
Uncontrolled Keywords: Extra Dimensions, String and Brane Phenomenology, String Models, Flux Compactifications
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 07 Mar 2023 16:08
Last Modified: 15 Mar 2024 09:04
DOI: 10.1007/JHEP09(2022)208
Open Access URL: https://doi.org/10.1007/JHEP09(2022)208
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3168828