Justin C. FengPh.D Physics, The University of Texas at Austin (2017)


Howdy! I am a research affiliate postdoc in the physics department working with Prof. Richard Matzner in the relativity group. Here's my cv. Research InterestsMy research is a mixture of theoretical and (light) numerical work in General Relativity. My theoretical work concerns topics involving variational principles in General Relativity (with a focus on boundary terms) and quantum gravity. I am also involved in a couple of numerical projects; I'm currently involved in the development of a PostMinkowskian fewbody code (we are hoping to release it soon), and the development of a GR code based on the generalized harmonic gauge formulation of the Einstein Field Equations. PhysicsNotes:The Poor Man's Introduction to Tensors  These are my notes on tensorsthey serve as an introduction to tensor calculus (in Euclidean space) accessible to those with a basic knowledge of linear algebra and vector calculus. (Updated December 31st 2017) Articles:Feng, J., Baumann, M., Hall, B., Doss, J., Spencer, L., Matzner, R., PoMiN: A PostMinkowskian NBody Solver, arXiv:1805.00813 (2018) Accepted for Publication in ApJ Feng, J. C., A Volume Average Regularization for the WheelerDeWitt Equation, arXiv:1802.08576 (2018) Feng, J. C., Matzner, R. A., From Path Integrals to the WheelerDeWitt Equation: On Time Evolution in Spacetimes With Spatial Boundary, Phys. Rev. D, 96:106005, Nov 2017 arXiv:1708.07001 Feng, J. C., Matzner, R. A., The Weiss Variation of the Gravitational Action, arXiv:1708.04489 (2017) CodesPoMiN  This is a PostMinkowskian NBody code, written in C, which includes General Relativistic effects up to first order in Newton's constant G, and all orders in the speed of light c. Last modified 05032017 