Jann Zosso
Doctor of Sciences ETH Zürich
About me
I'm an SNF Postdoctoral Research Fellow at the Niels Bohr Institute in Copenhagen. My research focuses on fundamental properties of gravity theories and their implications on observational tests, in particular through gravitational wave signals and gravitational memory.
Short biography
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SNF Postdocoral Research Fellow, Strong Group, Center of Gravity, Niels Bohr Institute, Denmark (2025-ongoing)
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SNF Postdocoral Research Fellow, Albert Einstein Center, University of Bern, Switzerland (2024-2025)
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Doctorate in Theoretical Physics, ETH Zürich, Switzerland (2019-2024), Advisor: Prof. Lavinia Heisenberg and Prof. Philippe Jetzer
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ETHZ Doc.Mobility Fellowship, UIUC, USA (2022-2023), Advisor: Prof. Nicolás Yunes
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Bachelor and Master in Physics, EPFL, Switzerland (2012-2018), Advisor: Prof. Riccardo Rattazzi
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Research
All my scientific publications can be found here.
A selection:
Foundations of Gravitational Physics
Gravity is special because the energy carried by a gravitational field will itself source an additional gravitational field: it is inherently non-linear. This results in the prediction that every gravitational wave will leave its traces in the form of permanent scars within the fabric of spacetime. This is the gravitational wave memory effect!
We don't even know everything about charges and magnets yet!
Who thought we can still expand our knowledge on electromagnetism? The memory effect has a counterpart in classic electromagnetism too and this phenomenon can be significantly bigger than previously thought! A concequencial step closer to a laboratory deep into foundational concepts of theoretical physics.
Predictions for the Next Generation of GW Detectors
The LISA mission led by ESA will be constructed of three spacecrafts connected through lasers that will allow measuring the deformations of space-time due to the passage of gravitational waves in an entirely new regime. Excitingly, the gravitational wave memory effect is expected to be finally measured by LISA!
Cosmology
Cosmology is the study of the origin, structure, and development of the entire universe. While the current standard model is based on General Relativity, inconsistencies within the determination of key cosmological observables could indicate the first experimental sign for the need of a theory beyond.
