Description
Dark matter and Dark Energy.
Chair: Bennedict Crossey
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Dong Ha Lee (University of Sheffield)18/12/2025, 14:50
Since the discovery of the accelerated expansion of the Universe at the end of the past century, we have obtained an abundance of precision measurements of our Universe, opening the gates for the era of precision cosmology.
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However, with these new measurements and surveys came tensions and hints of new physics beyond that of the Standard Model of cosmology and particle physics.
I will... -
Dhruv Pathak (King's College London)18/12/2025, 15:20
You can create a black hole bomb using a Kerr black hole by putting mirrors around it. This can happen because of a phenomenon called superradiance using which an incident wave can get reflected back with larger energy. The mirror then reflects it back and you can keep on extracting energy until the limit is reached. For a massive field, the mass itself acts as a natural barrier. Ultra light...
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Mario Ramos Hamud (University of Cambridge)18/12/2025, 15:50
Motivated by recent results of DESI suggesting that a dynamical dark energy may render a better fit to experimental data in comparison to the Λ-CDM with a cosmological constant, we consider a two-field 4D effective model of quintessence. Inspired by string compactifications with a complex modulus, we study the system consisting of two real scalar fields kinetically coupled, giving rise to a...
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