Communication Dans Un Congrès Année : 2022

Extra-dimensional theory and phenomenology in the era of gravitational waves

Résumé

Now that we find ourselves in the epoch of gravitational-wave (GW) astronomy, we can explore new avenues by which to test general relativity (GR) and search for extra dimensions. As a first step, we consider the quasinormal mode (QNM) spectrum of a 4D Schwarzschild black hole embedded in a 7D partially-compactified space-time of mixed scalar curvature. This allows us also to explore the properties of a space-time unrepresented in the Beyond the Standard Model literature whose higher-dimensional part is a nilmanifold (twisted torus) characterised by negative Ricci curvature. We compute the QNM frequencies in this setup using three numerical techniques and import constraints from the LIGO-Virgo-KAGRA collaboration to place bounds on a possible observable from extra dimensions. Our next step is to study the finite temperature effective potential of a simplified 5D model to determine if a first-order phase transition is possible, as well as strong enough to generate a detectable GW signature.

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in2p3-04908080 , version 1 (23-01-2025)

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  • HAL Id : in2p3-04908080 , version 1

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A. Chrysostomou. Extra-dimensional theory and phenomenology in the era of gravitational waves. Journées de Rencontre Jeunes Chercheurs 2022, Oct 2022, Saint-Jean-de-Monts, France. ⟨in2p3-04908080⟩
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