ESC

About

Johan Guzman

Johan Guzman

PhD Student in Nuclear and Hadron Physics, Indiana University Bloomington

  • Ph.D. in Physics (Nuclear/Hadron Physics), Indiana University Bloomington (2024 – present)
  • M.S. in Physics, Indiana University Bloomington (2025)
  • B.S. in Mathematics, University of Barcelona (2018 – 2024)
  • B.S. in Physics, University of Barcelona (2018 – 2023)
  • Exchange Program in Physics, Lund University (2022)

Research

I am a second-year PhD student working under Prof. Adam Szczepaniak within the JPAC Collaboration at Indiana University Bloomington. My research sits at the intersection of hadronic amplitude analysis and Regge phenomenology, with a focus on understanding the spectrum of light mesons — particularly exotic states that do not fit the conventional quark model. I use dispersion relations, finite energy sum rules, and coupled-channel amplitude methods, complemented by machine learning for pole localization. Before coming to IU, I completed a B.S. in Physics and a B.S. in Mathematics at the University of Barcelona (2023, 2024), where my thesis applied finite energy sum rules and Regge theory to $\eta^{(\prime)}\pi$ scattering — a thread I have continued and expanded in my PhD work. I passed the PhD Qualifying Examination in August 2025.

Skills

  • Physics: $S$-matrix theory, dispersion relations, Regge phenomenology, partial-wave analysis, finite energy sum rules, effective field theory.
  • Computing: Python (NumPy, SciPy, PyTorch), C/C++, MATLAB; HPC on IU's Quartz cluster (SLURM); Git, LaTeX.
  • Mathematics: Complex analysis, group theory (SO/SU/U), renormalization group methods.

Awards

  • Nobel Prize in Physics (1965)
  • Albert Einstein Award (1954)
  • E.O. Lawrence Award (1962)
  • Oersted Medal, AAPT (1972)
  • National Medal of Science (1979)