Johan Guzman

PhD Student in Nuclear and Hadron Physics, Indiana University Bloomington

I am broadly interested in understanding the structure of hadrons and the nature of the strong force from the bottom up — using the analytic structure of scattering amplitudes, Regge theory, and dispersion relations to extract and interpret resonances from experimental data. Much of my work sits at the boundary between formal theory and phenomenology, asking what the mathematics of amplitudes can tell us about particles that are genuinely difficult to classify.

About me

I am a second-year PhD student in nuclear and hadron physics at Indiana University Bloomington, working under Prof. Adam Szczepaniak within the JPAC Collaboration. My research focuses on hadronic amplitude analysis, finite energy sum rules, and the search for exotic meson states. I passed the PhD Qualifying Examination in August 2025.

Before coming to IU, I completed a B.S. in Physics and a B.S. in Mathematics at the University of Barcelona (2023, 2024), including an exchange year at Lund University (2022). My physics thesis applied dispersion relations and finite energy sum rules to $\eta^{(\prime)}\pi$ elastic scattering, estimating the $\pi_1$ hybrid meson contribution — a thread I have continued and expanded in my PhD work.