Academic CV

Guru Kalyan Jayasingh · Physics Ph.D. Candidate, UC San Diego
gjayasingh@ucsd.edu · Department of Physics, 9500 Gilman Drive, La Jolla CA 92093

Research Interests

Fluid mechanics and turbulence · Non-equilibrium statistical mechanics · Condensed matter · Machine learning for the physical sciences

Education

University of California San Diego — Ph.D. in Physics 2022 – present

Advisor: Prof. Nigel Goldenfeld. Focus: statistical mechanics of turbulent phenomena.

Indian Institute of Technology Bombay — Dual Degree (B.Tech + M.Tech), Engineering Physics 2017 – 2022

Specialization: Nanoscience · GPA 9.44 / 10. Master's thesis: Topological Insulator–Superconductor Junctions, with Prof. Hridis K. Pal.

Research Positions

AI/ML InternTAU Systems Inc., Carlsbad, CA Jun 2026 – Sept 2026
  • Designing a physics-informed machine learning model to predict properties of accelerated electron bunches from laser and plasma parameters in laser-plasma wakefield accelerators, with Reinier Van Mourik (Senior Scientist, Software & Data Science).
  • Building the associated data preprocessing and feature-engineering pipeline.
  • Developing strategies for the model to handle day-to-day variation in accelerator operation, and an ML-assisted optimization loop to automate start-up and tuning of the accelerator.
Graduate ResearcherUniversity of California San Diego Sept 2022 – present

Transition to fluid turbulence as an ecological phase transition, with Prof. Nigel Goldenfeld.

  • Developed a stochastic model describing the laminar-to-turbulent transition as a non-equilibrium phase transition in flows with body forces.
  • Predicted a tricritical fixed point governing turbulence in curved and heated pipes, and constructed a phase diagram linking body-force strength to directed-percolation universality classes; published in Physical Review Letters.
  • Provided scaling predictions for future experimental verification.
  • Current work on wave turbulence, transitions to turbulence in shear flows, and stochasticity in turbulent fluids.
Master's ResearcherIndian Institute of Technology Bombay Aug 2021 – Aug 2022

Characterizing topological insulator–superconductor junctions, with Prof. Hridis K. Pal.

  • Modeled superconductor–topological insulator and superconductor–metal junctions using quasi-classical Green's function methods to study critical temperature, critical fields, and the influence of surface states on superconductivity.
  • Derived a non-local Ginzburg–Landau functional for the order parameter, and investigated the effects of topology in superconductor–topological insulator heterostructures.
Research InternTata Institute of Fundamental Research (TIFR), Mumbai Feb 2020 – Sept 2021

Electron–phonon equilibration via Keldysh field theory, with Prof. Rajdeep Sensarma.

  • Investigated self-consistent electron–phonon dynamics within the Keldysh formalism, beyond the standard static-bath approximation.
  • Wrote extensive and modular Python (& Julia) codes for evolving the coupled system; tested constituents by connecting them to baths and studying equilibration characteristics from specific initial conditions.
Research InternAalto Science Institute (AScI), Finland Apr 2020 – May 2021

Fluctuations in non-centrosymmetric superconductors, with Dr. Alexander Zyuzin. Selected for the AScI International Internship Program.

  • Extended Ginzburg–Landau theory to spin–orbit-coupled superconductors lacking inversion symmetry, studying the effects of spin–orbit coupling on thermodynamic observables.
  • Analyzed fluctuation effects on magnetic susceptibility and specific heat near the critical temperature; extended into my bachelor's thesis, which also investigated odd-parity superconductors.
Research InternNational Institute of Science Education and Research (NISER), Bhubaneswar May 2018 – Aug 2018
  • Supervised by Dr. Sutanu Roy; studied Banach spaces, fixed-point theorems, and mathematical formulations of Google's PageRank algorithm.

Publications

  • G. K. Jayasingh & N. GoldenfeldTricritical directed percolation controls the laminar–turbulent transition in pipes with body forces, Physical Review Letters 135, 104001 (2025). doi:10.1103/46g3-n7cx
  • G. K. Jayasingh, B. Kaszas, C. C. Caulfield & N. GoldenfeldTransition to turbulence in stably stratified flows (manuscript in preparation, 2026).
  • G. K. Jayasingh & N. GoldenfeldMay's complexity–stability hypothesis for neural networks (manuscript in preparation, 2026).
  • S. Chakraborty, G. K. Jayasingh & H. PalInverse proximity effects of a topological insulator on a superconductor in one-dimensional heterostructures (manuscript in preparation, 2026).

Talks and Presentations

Laminar–Turbulent Transition in Pipes with Body Forces: Continuous, Discontinuous, or Both? Mar 2025

APS Joint March & April Meeting, Global Physics Summit, Anaheim, CA

Presented results on tricritical turbulence scaling in flows under body forces.

Tricritical Directed Percolation and Transitional Turbulence Oct 2025

JIFT Workshop on Strong Turbulence, UC San Diego

Invited talk on statistical mechanics of turbulence and universality in boundary-driven flows.

Low-Rank Hypothesis of Complex Systems Feb 2025

UC San Diego

Discussed dimensional reduction and low-rank structure in complex systems. Slides.

Aspects of Unconventional Superconductivity Aug 2022

Condensed Matter Journal Club, IIT Bombay

Classification of order parameters within a generalized BCS theory and the nature of physical observables for different pairing symmetries.

Bosonization and Applications Sept 2021

Condensed Matter Journal Club, IIT Bombay

Two-part seminar deriving bosonization identities and their application to transport in Luttinger liquids.

Conferences and Summer Schools

  • Simons Collaboration on Wave Turbulence Annual Meeting, New York City (Dec 2025) – Participant.
  • JIFT Workshop on Strong Turbulence, Avalanching, and Structures in Boundary Plasma Turbulence, UC San Diego (Oct 2025) – Invited talk.
  • APS Joint March and April Meeting, Global Physics Summit, Anaheim, CA (Mar 2025) – Contributed talk.
  • Physics and Mathematics of Hydrodynamic and Wave Turbulence, Centre International de Rencontres Mathématiques, Marseille (2025) – Declined.

Teaching and Academic Service

Teaching AssistantUC San Diego, Department of Physics 2022 – 2024
  • Emergent States of Matter (twice; graduate course, Prof. Nigel Goldenfeld).
  • Introductory mechanics and electromagnetism series, including hands-on labs covering waves and oscillations.
  • Led weekly discussion sections, held office hours, and assisted with grading and logistics.
Teaching AssistantIIT Bombay 2019 – 2022
  • Statistical Physics, Advanced Statistical Mechanics, Complex Analysis, Electromagnetism.
  • Conducted weekly tutorials; assisted with examinations, grading, and curating practice problems.

Honors and Awards

  • Institute Silver Medal, IIT Bombay (2022) – Awarded to the top-ranked student in the graduating class of each academic program.
  • K. Seshia Research Excellence Award, IIT Bombay (2022) – Given to the best Master's thesis in Physics for research originality and rigor.
  • Physics Excellence Award, Department of Physics, UC San Diego (2022).
  • Institute Academic Prizes, IIT Bombay (2019, 2021) – Annual award for the highest GPA in the Physics Department.
  • Aalto Science Institute (AScI) Fellowship, Finland (2020) – International research fellowship for top students in science and engineering.
  • Indian Young Physicists' League (IYPL)All-India Rank 3 (2021), national theoretical physics competition.
  • KVPY Fellowship, Department of Science & Technology, India (2017) – National fellowship for the top ~1% of science students with research potential.

Technical Skills

  • Programming: Python (7+ yrs) · C/C++ (working familiarity) · Mathematica
  • Machine learning: PyTorch · TensorFlow · scikit-learn · XGBoost · RNN / LSTM / GRU
  • Scientific computing: NumPy · SciPy · Pandas · Numba · Matplotlib · Seaborn
  • Methods: Stochastic modeling · Monte Carlo simulation · Finite-size scaling · Time-series analysis · Statistical analysis
  • Tools: LaTeX · Mathematica · Git · Jupyter

Leadership and Outreach

ManagerMaths & Physics Club, IIT Bombay 2019 – 2020
  • Led a 5-member team organizing lectures, workshops, and outreach for a 400-member campus community and 9,000+ online followers.
  • Coordinated visits including the Atomic Physics and Quantum Optics Lab at IISER Pune; managed campus-wide experimental physics competitions.
Invited speaker, "Why a Maths and Physics Club?" 2019
  • Advanced Pedagogy Workshop (TEQIP-KITE III). Addressed over 100 college-level mathematics faculty from across India, under the aegis of the World Bank and the Government of India.

Last updated: July 2026.