Research Interests
Theoretical particle physics beyond the Standard Model — extra dimensions, axions, dark matter, neutrinos, and the transient signals that connect them.
Extra Dimensions & the Kaluza-Klein Gravitational Sector
A recurring theme in my work: if extra spatial dimensions exist, 4D General Relativity emerges from a higher-dimensional theory whose compactification produces a tower of massive Kaluza-Klein gravitons — spin-2, vector, and scalar. I study the sum rules and symmetry structures that govern how these towers interact, and how truncating them can produce unphysical results unless the full tower is kept.
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Selected work: Gravity-matter sum rules in models with a single extra-dimension (JHEP 05 (2024) 315) and Unitarity in KK-graviton production (JHEP 04 (2021) 143).
Axions and Axion-Like Particles (ALPs)
ALPs — particles with only anomalous or derivative couplings — arise in many models as pseudo-Goldstone bosons of broken axial symmetries. I work on their phenomenology across laboratory, collider, and cosmological settings, including scenarios with multiple axion fields and extra-dimensional axion patterns.
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Selected work: Multiple Axions in Laboratory Experiments, Extra-dimensional axion patterns (Phys. Rev. D 111 (2025) 075006), and Probing HNL-ALP couplings at colliders.
Dark Matter
The nature of dark matter remains one of the biggest open questions in physics. I explore scenarios where dark matter interacts primarily through gravity or gravity-adjacent portals — including massive spin-2 mediators in warped extra dimensions and Majoron dark matter connected to thermal leptogenesis.
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Selected work: The Majoron Cosmological Window: Dark Matter and Thermal Leptogenesis, Warm dark matter from a gravitational freeze-in in extra dimensions (JHEP 04 (2023) 032), and Dark matter interacting via a massive spin-2 mediator in warped extra-dimensions (JHEP 11 (2021) 036). Image credit: Halo and Galaxy Formation Histories from the Millennium Simulation, G. Lemson et al. (2006).
Neutrinos Beyond 4D
More recently I have worked on building a comprehensive extra-dimensional neutrino phenomenology, and on how scalar-tensor gravity is constrained by neutrino physics.
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Selected work: Do neutrinos dream in 5D? Towards a comprehensive extra-dimensional neutrino phenomenology (JHEP 05 (2026) 152) and Neutrino Constraints on Scalar-Tensor Gravity.
Transient & Gravitational-Wave Signals
Black hole formation and other transient astrophysical events can leave characteristic imprints in wave-like dark matter and axion experiments, and metastable cosmic strings can source a distinctive gravitational-wave background. I have been developing the phenomenology of these transient BSM signals.
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Selected work: Scalar Tsunamis from Black Hole Formation, Star shearing season: transient signals in wave-like dark matter experiments from black hole formation (Eur. Phys. J. C 85 (2025) 155), and Thermal Metastable Strings in One-Scale Models and Gravitational Waves.