Dr. Félix-Louis Julié

Postdoktorand/Leibniz Fellow
Astrophysikalische und Kosmologische Relativitätstheorie
Standort Potsdam
+49 331 567-7194
+49 331 567-7298


The central purpose of my research work is to test gravity in its strong field regime. To this aim, I focus on the problem of motion and gravitational radiation of compact binary systems in modified gravities, by adapting and generalizing some of the key analytic developments of general relativity.

More specifically, in the past years I generalized the effective-one-body (EOB) formalism to modified gravities; addressed the post-newtonian (PN) description of “hairy” binary black holes (BH); defined the global charges and entropies of the latter and established the resulting first law of BH thermodynamics, as a tool to shed light on their dynamics in an inspiral; finally, I recently generalized the Arnowitt-Deser-Misner (ADM) formalism, with the aim of guiding future developments of numerical relativity (NR) in modified gravities.

Within the vast “zoo” of modified gravities, I focused so far on scalar-tensor models and on their Einstein-Maxwell-dilaton and Einstein-scalar-Gauss-Bonnet extensions, which predict “hairy” black hole spacetimes.

Here is a link to my publications from INSPIRE.


I received my BS. and MS. degrees in theoretical physics in 2012 and 2014 from the École Normale Supérieure (ENS) in Paris. In September 2018, I defended a PhD thesis in theoretical physics entitled “On the motion and gravitational radiation of binary systems in scalar-tensor and Einstein-Maxwell-dilaton theories,” which I prepared under the supervision of Nathalie Deruelle at the AstroParticle and Cosmology (APC) laboratory in Paris. In November 2018, I became a postdoctoral fellow of the Johns Hopkins University (JHU) in Baltimore, as a member of Emanuele Berti’s group at the Department of Physics and Astronomy.

I joined the Astrophysical and Cosmological Relativity (ACR) division of the Albert Einstein Institute (AEI) as a postdoctoral fellow in November 2021.

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