Julien Barrattheoretical physicist
Julien Barrattheoretical physicist
Julien Barrat theoretical physicist

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Choose an object in the study, or take one of these paths.
Black hole
I study quantum field theory through its symmetries, defects and thermal behaviour. My work brings together conformal field theory, analytic and numerical bootstrap methods, and holography.
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Book
I am a theoretical physicist and postdoctoral researcher at Princeton University. I develop analytic and numerical bootstrap methods for conformal field theories with defects, at finite temperature and in finite volume.

DFG Walter Benjamin Programme · 2026–2028
Bootstrapping confinement and black hole phase transitions with AI
Two-year research funding at Princeton University and Universität Hamburg.
Camera
“All possible paths” is a nod to path integrals in quantum physics. It also reflects my own route: before becoming a physicist, I had a first career in photography. Music has also been part of my path.
This site brings together the questions I study now and some of the paths that brought me here.
See some photos I took or listen to some music I made ↗.
Frame
An online seminar series on quantum field theory at finite temperature.
We bring together researchers interested in thermal physics, conformal field theory, holography, black holes and bootstrap methods, with talks and discussions of current research.
I organise the series with Deniz Bozkurt, Enrico Marchetto and Alessio Miscioscia.
Letter