Theoretical Physics, Quantum Theory, High Performance Computing, Computer Graphics, Computer Networks
Postdoc, Computational Biophysics; Trento Institute for Fundamental Physics and Applications, Italy
Applied transition-path theory to protein folding molecular dynamics (Gromacs, Python and MDAnalysis), resulting in a variational estimate of the committor function for fast-folding proteins. Automated production and analysis of ratchet-and-pawl Gromacs simulations on a cluster (Bash, Makefile). Co-lectured a course on molecular physics for biology and computer science students. Assisted in maintaining servers and computer cluster infrastructure (Proxmox, Debian, Wordpress, Bash, slurm).
PhD student, Theoretical Nuclear Physics; Johannes Gutenberg University of Mainz, Germany
Conducted a supervised research (Python, FORM, pen) on application of dispersion relations in quantum field theory to various hadronic processes, contributing to several highly-cited papers. Did 3 semesters of teaching assistance in quantum mechanics and basic quantum field theory.
Python developer at ScienceWISE project; Swiss Federal Institute of Technology Lausanne, Switzerland
Developed and monitored backend systems for ScienceWISE project (Django, MySQL, Python, Bash) improving data management and user experience.
PhD, Theoretical Physics; Johannes Gutenberg University of Mainz, Germany
Thesis: “Dispersion relations in two-photon hadronic processes”
Extended MSc study to a broader range of hadronic interactions, namely the timelike Compton scattering, the quarkonium – proton scattering, and the hadronic light-by-light scattering in relation to muon’s anomalous magnetic moment. The research resulted in multiple highly-cited papers.
MSc, Theoretical Physics; Taras Shevchenko National University of Kyiv, Ukraine
Thesis: “Causality constraints on the forward Compton scattering of the proton”
For the thesis, performed numerical calculations for the forward Compton scattering off the proton as a probe of its low-energy electromagnetic response structure, resulting in two published papers.
BSc, Theoretical Physics; Taras Shevchenko National University of Kyiv, Ukraine
Thesis: “Maximal abelian gauge fixing in SU(2) lattice gluodynamics with OpenCL”
Obtained a ground knowledge of general sections of physics, with extensive classes in mathematics and computational methods. Got basic experience of programming in C and C++. For the thesis, (re)implemented a subroutine for the maximal abelian gauge fixing of SU(2) Yang-Mills field on a lattice with OpenCL for GPUs.
Python: Deep knowledge of the core language features, extensive experience of scientific calculations with NumPy/SciPy (data fitting and numerical integration, statistics), visualization for publications, automation. Practical familiarity with building web apps on Flask + SQL. Interoperability with C and other languages. Check out my Github gists for code samples: https://gist.github.com/neuton.
C: Decent knowledge from undergrad on efficient numerical methods for solving linear algebra and calculus problems. Practiced OpenCL and CUDA usage for GPGPU calculations.
FORM: Did symbolic algebra on particle scattering amplitudes for my PhD research.
Haskell: Loved it. Never used.
Familiar with C++, Fortran, Pascal, Bash, Makefile etc.
Co-lecturer, Introduction to Molecular Physics; University of Trento, Italy
Co-lectured a course on molecular physics for biology and computer science students, from the ground-up to the basics of quantum theory of molecular interactions. Composed lectures on the introductory hands-on mixture of multivariable calculus, mathematical physics and quantum mechanics.
Teaching assistant, Quantum Field Theory; Johannes Gutenberg University of Mainz, Germany
Led classes on solving exercises on introductory quantum field theory. Graded homeworks and final exam.
Teaching assistant, Quantum Mechanics; Johannes Gutenberg University of Mainz, Germany
Supervised creation and assembly of exercises and final exam for undergrad physics students for the introductory quantum mechanics course.
Teaching assistant, Advanced Quantum Mechanics; Johannes Gutenberg University of Mainz, Germany
Led classes on solving exercises on relativistic many-body theory / quantum field theory and graded students’ homeworks.
O. Gryniuk, S. Joosten, Z.-E. Meziani, M. Vanderhaeghen, “Υ photo-production on the proton at the Electron-Ion Collider”
Phys. Rev. D 102 (2020) no.1, 014016 (e-Print: arXiv:2005.09293 [hep-ph]).
A. Gérardin, J. Green, O. Gryniuk, G. von Hippel, H. B. Meyer, V. Pascalutsa, H. Wittig, “Hadronic light-by-light scattering amplitudes from lattice QCD versus dispersive sum rules”
Phys. Rev. D 98 (2018) no.7, 074501 (e-Print: arXiv:1712.00421 [hep-lat])
O. Gryniuk, M. Vanderhaeghen, “Accessing the real part of the forward J/ψ-p scattering amplitude from J/ψ photoproduction on protons around threshold”
Phys. Rev. D 94 (2016) no.7, 074001 (e-Print: arXiv:1608.08205 [hep-ph])
O. Gryniuk, F. Hagelstein, V. Pascalutsa, “Evaluation of the forward Compton scattering off protons: II. Spin-dependent amplitude and observables”
Phys. Rev. D 94 (2016) no.3, 034043 (e-Print: arXiv:1604.00789 [nucl-th])
O. Gryniuk, F. Hagelstein, V. Pascalutsa, “Evaluation of the forward Compton scattering off protons: Spin-independent amplitude”
Phys. Rev. D 92 (2015) 074031 (e-Print: arXiv:1508.07952 [nucl-th])
J. Green, O. Gryniuk, G. von Hippel, H. B. Meyer, V. Pascalutsa, “Lattice QCD calculation of hadronic light-by-light scattering”
Phys. Rev. Lett. 115 (2015) 22, 222003 (e-Print: arXiv:1507.01577 [hep-lat])
N. Asmussen et al., “Hadronic light-by-light scattering contribution to the muon g – 2 on the lattice”
EPJ Web Conf. 179 (2018) 01017 (e-Print: arXiv:1801.04238 [hep-lat])
I. V. Anikin et al., “Nucleon and nuclear structure through dilepton production”
Acta Phys. Polon. B 49 (2018) 741 (e-Print: arXiv:1712.04198 [nucl-ex])
A. Gerardin, J. Green, O. Gryniuk, G. von Hippel, H. B. Meyer, V. Pascalutsa, H. Wittig, “Light-by-light forward scattering amplitudes in Lattice QCD”
EPJ Web Conf. 175 (2018) 06030 (e-Print: arXiv:1710.09359 [hep-lat])
J. Green, N. Asmussen, O. Gryniuk, G. von Hippel, H. B. Meyer, A. Nyffeler, V. Pascalutsa, “Direct calculation of hadronic light-by-light scattering”
PoS LATTICE 2015 (2016) 109 (e-Print: arXiv:1510.08384 [hep-lat])
Good written and verbal communication in English (C1) and Ukrainian (native speaker)
Regularly donating to the Ukrainian army and invite everyone to do so: https://savelife.in.ua/en/donate-en