Welcome

I’m Charles - a computational (and sometimes theoretical) physicist with experience developing electronic structure codes, exploring model Hamiltonians, and simulating a wide swath of atomic excitations. I spend most of my time in high performance computing environments where I am constantly asking myself how to fit more jobs onto the same number of CPUs. I like to tinker around with software, which is a nice way of saying that I enjoy to spending 5 hours automating a task that takes 5 minutes.

I received my BS in Physics from the Georgia Institute of Technology in Atlanta with a minor in French. My early research interests were a bit scattered, with a few short stints in high energy and experimental condensed matter physics. After Covid forced science online I found my calling on the computational side of condensed matter where I can explore the physics I am interested in with meticulous control and arbitrary precision.

I have recently recieved my PhD in Condensed Matter Physics from The University of Washington in Seattle, under the advisement of Gerald T. Seidler and John J. Rehr. My research centered around computational and theoretical methods for treating x-ray spectroscopy, a powerful tool for explaining all sorts of atomic, electronic, and material properties. My thesis was about first-principles approach to core-to-core X-ray Emission Spectroscopy (XES), focusing on highly correlated 3d-transition metals.

I work extensively with Python (numpy, scipy, pandas, matplotlib, tensorflow, ect) and Mathematica for data analysis, with some moderate use of Lua and C++ for scripting and development of new electronic structure software. In all aspects of my work, I focus on clear and thorough representation of data, with significant effort being put towards finding interesting ways of visualizing information to better tell a complete story.

CV

Publications

  • Under Preparation: (2026) C. A. Cardot, J. Tichenor, S. M. Shjandemaar, J. J. Kas, F. D. Vila, G. T. Seidler, J. J. Rehr, Machine Learning to Predict Spectral Anisotropy in Valence-to-Core X-ray Emission Spectroscopy
  • Journal Article: (2024) J. E. Abramson‡, C. A. Cardot‡, J. J. Kas, J. J. Rehr, W. Kaminsky, H. Michor, M. Roman, G. T. Seidler, X-ray Emission Spectropolarimetry of Strongly Anisotropic Single Crystal Systems Using a Rowland Circle Geometry, ‡These authors contributed equally to this work, https://doi.org/10.1021/acs.jpcc.5c05392
  • Journal Article: (2024) *Many authors...*, The ATLAS experiment at the CERN Large Hadron Collider: a description of the detector configuration for Run 3, https://doi.org/10.1088/1748-0221/19/05/P05063
  • Journal Article: (2024) K. Ackermann, K. Arnold, M. Braß, C. Cardot, R. Green, S. Heinze, P. Hill, Y. Lu, S. Macke, M. Retegan, S. Shokri, M. Tagliavini, A. Zacinskis, M. W. Haverkort, QUANTY, a quantum many-body scripting toolkit, https://www.scipost.org/preprints/scipost_202412_00045v1/
  • Journal Article: (2024) C. A. Cardot, J. J. Kas, J. E. Abramson, J. J. Rehr, G. T. Seidler, Prediction and Measurement of Resonant and Nonresonant Shake Effects in the Core-level X-ray Emission Spectra of 3d0 Transition Metal Compounds, https://doi.org/10.1021/acs.jpclett.4c02583
  • Journal Article: (2024) C. A. Cardot, J. J. Kas, J. E. Abramson, J. J. Rehr, G. T. Seidler, Core-to-Core X-ray Emission Spectra from Wannier Based Multiplet Ligand Field Theory, https://doi.org/10.1016/j.elspec.2024.147419
  • Journal Article:: (2022) J. C. Woicik, E. L. Shirley, C. Weiland, A. K. Rumaiz, C. A. Cardot, J. J. Kas, and J. J. Rehr, Noble-metal dark-edge fermiology: Centrifugal barriers, core-hole memory, and the Zeeman Auger effect, https://doi.org/10.1103/PhysRevB.104.245131

Conferences, Summer Schools, and Talks

  • PhD Defense (2025), Polarization Dependence in the X-ray Emission of 3d Transition Metal Systems, Recorded Talk
  • ANL (2025): Nearly ab-initio MLFT applied to Kα XES of 3d transition metal systems, Recorded Talk
  • Summer School (2023): Spectroscopy and Electronic Structure of Transition Metal Complexes, School Link, Poster, was one of 3 selected for the Best Poster
  • APS March Meeting (2023): Nearly ab-inito MLFT applied to Kalpha XES of 3d transition metal systems, Recorded Talk
  • Summer School (2022): International Summer School on Computational Quantum Materials School Link
  • APS March Meeting (2022): Exploration of ab-initio calculations of 3d transition metal K-alpha X-ray Emission Spectroscopy, Recorded Talk
  • XAFS Conference (2021): The XAS Resource Workbook (XAS-RW): An Open-Source Instructional Guide for New XAS Users, Recorded Talk
  • APS March Meeting (2021): Cumulant Green’s function calculations of the asymmetry of 4f_7/2 peaks in the XPS of Au and Pt, Slide Deck
  • Excellent Adventures (2020): Physics of X-ray Diffraction Spectroscopy, Recorded Talk
  • 36th International Cosmic Ray Conference (ICRC 2019): Chujie Chen and Charles Cardot, A Catalog of Astrophysical Neutrino Candidates for IceCube, Conference Proceeding