Expect Challenge. Achieve Distinction.

Faculty and Staff of Norwich University
Assistant Professor

Portrait of Jean-Sebastien Gagnon

Jean-Sebastien Gagnon, Ph.D., joined the physics department of Norwich University in 2019.

In 2007, he completed his Ph.D. in theoretical high-energy physics at McGill University, where he worked on computing transport coefficients in hot gauge field theories under the supervision of S. Jeon. After his Ph.D. he joined the group of M. Shaposhnikov as a postdoc at Ecole Polytechnique Federale de Lausanne to conduct research on baryogenesis (a fancy word to say “Why is there more matter than antimatter in the universe”). He completed another postdoc in the group of J. Berges at the Technical University Darmstadt, where he worked on non-equilibrium quantum field theory, transport coefficients, and dark energy (another fancy word to say “Why is the rate of expansion of the universe increasing with time”). A common theme of his early research is (equilibrium and non-equilibrium) field theory applied to problems in particle physics and cosmology.

His career took a different turn after spending a few years as a postdoc/associate in the lab of J. Perez-Mercader at Harvard. While there, he applied field theory to chemical systems of the reaction-diffusion type that mimic some aspects of living systems. More specifically, he is applying dynamical renormalization group techniques to those “living” chemical systems, in order to study the effect of the environment on their behavior. He was also part of Harvard’s “Origins of Life Initiative,” in which he was exposed to the fascinating world of astrobiolgy. He is now interested in chemical systems that model the transition between deterministic chemistry and “living” chemistry at the origin of life (such as autocatalytic sets), using a combination of theoretical tools (field theory, network theory, etc.) and numerical simulations.

On the teaching side, Professor Gagnon is passionate about physics and tries his best to share that passion with his students. He loves to incorporate unusual examples in his lectures (such as “How many laser pointers are necessary to stop the Earth’s rotation”), many of them coming from his readings on science fiction and fantasy, of which he is a big fan. He even published a paper on the physical (im)possibility of lightsabers in an educational journal, in order to introduce nonlinear electrodynamics to students with an undergraduate physics background. His enthusiasm and dedication earned him the Castleton University Endowed Part-Time Faculty Award in 2018.

Visit Professor Gagnon’s Google Scholar profile for a complete list of his publications.

Contact Information
This email address is being protected from spambots. You need JavaScript enabled to view it.

— You at Norwich —

Challenges and opportunity await; the world needs your strength, talent, grit and compassion more than ever. Following an experiential learning tradition more than 200 years strong, Norwich will prepare you to lead and serve in a career you love — in the private sector, public sector or the armed forces. We invite you to join us. Live, learn and lead at Norwich.

I'm Ready for Norwich

Norwich University admits students of any race, color, national and ethnic origin to all the rights, privileges, programs, and activities generally accorded or made available to students at the school. It does not discriminate on the basis of race, color, national and ethnic origin in administration of its educational policies, admissions policies, scholarship and loan programs, and athletic and other school-administered programs.

Norwich University collects personal data about visitors to our website in order to improve the user experience and provide visitors with personalized information about our programs and services. By using our site, you acknowledge that you accept the information policies and practices outlined in our Privacy Policy.