Profile Details

Create Project

★★★★★

☆☆☆☆☆

USD 25 /hr

★★★★★

☆☆☆☆☆

Hire Raphael D.

South Africa

USD 25 /hr

Theoretical and Mathematical Physicist. Rhodes Scholar Elect. Quantum Field Theorist. App developer.

Profile Summary

I am a theoretical physics researcher with training in quantum field theory, nonlinear dynamics, and mathematical modelling. I completed a triple major in Physics, Mathematics, and Applied Mathematics and am pursuing postgraduate study in theoretical physics, with a forthcoming master’s degree at the University of Oxford. My current research focuses on solitons, oscillons, and localized structures in field theories. I have published in the Journal of High Energy Physics on multiscale variational methods applied to study ϕ⁴ oscillons. I also have experience extending these techniques to parametrically driven systems. Alongside my work on mathematical techniques for nonlinear equations, I have rigorous training in quantum field theory and its core analytical frameworks. I am comfortable applying QFT methods to concrete problems and studying extended systems using a combination of analytical approaches, numerical computation, and symbolic algebraic manipulation.

Subject Matter Expertise

• ☆ Wave Mechanics
• ☆ Applied Mechanics
• ☆ Theoretical Mechanics
• ☆ Statistical Mechanics
• ☆ Thermodynamics
• ☆ Particle Physics
• ☆ Quantum Mechanics
• ☆ Theoretical Physics
• ☆ Computational Physics
• ☆ Applied Physics
• ☆ Relativity Theory
• ☆ Applied Mathematics
• ☆ Mathematical Models
• ☆ Mathematical Optimization
• ☆ Mathematics Education
• ☆ Mathematical Physics
• ☆ Differential Equations
• ☆ Chaos Theory
• ☆ Group Theory
• ☆ Mathematical Wavelets
• ☆ Computational Mathematics
• ☆ Pure Mathematics
• ☆ Calculus
• ☆ Mathematical Analysis
• ☆ Integral Equations

Services

• Research

Research Fact Checking, Scientific and Technical Research

Work Experience

Student

University of Cape Town

January 2022 - Present

Co-founder, Lead Developer

Delta Education

January 2021 - Present

Candidate Fellow

Allan Gray Orbis Foundation (AGOF)

January 2026 - January 2026

Freelance tech design, 3d designer

Amnova Tech

January 2021 - January 2025

Education

Masters (Science)

Oxford University

September 2026 - December 2026

Honours B.Sc.

University of Cape Town

January 2025 - December 2025

Bachelors

University of Cape Town

January 2022 - December 2024

Certifications

• NITHECS Winter Internship Program 2025

  NiTheCS

  June 2025 - July 2025

Publications

JOURNAL ARTICLE

Raphael De Sousa, N. V. Alexeeva, I. V. Barashenkov, Alain Dika (2024). The energy-frequency diagram of the (1+1)-dimensional Φ4 oscillon . Journal of High Energy Physics.