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


Howdy! I am a research affiliate postdoctoral fellow in the physics department working with Prof. Richard Matzner in the theory and relativity groups. Here's my cv. Research InterestsMy research is a mixture of theoretical and numerical work in General Relativity. My theoretical work concerns topics involving variational principles in classical and quantum General Relativity (with a focus on boundary terms). I am also involved in a couple of numerical projects; I'm currently involved in the development of the PoMiN code, 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:Bhattacharjee, C., Feng, J. C., Stark, D. J., Surveying the implications of generalized vortical dynamics in curved spacetime, Monthly Notices of the Royal Astronomical Society, page sty2277, 2018 Ciufolini, I., Matzner, R. A., Feng, J. C., Paolozzi, A., Rubincam, D. P., Pavlis, E. C., Ries, J. C., Sindoni, G. and Paris, C., A new laserranged satellite for General Relativity and space geodesy: IV. Thermal drag and the LARES 2 space experiment , Eur. Phys. J. Plus (2018) 133: 333 Feng, J. C., Matzner, R. A., The Weiss Variation of the Gravitational Action, Gen Relativ Gravit (2018) 50: 99 (arXiv:1708.04489) Feng, J. C., A Volume Average Regularization for the WheelerDeWitt Equation, Phys. Rev. D 98, 026024 (2018) ( arXiv:1802.08576) Feng, J., Baumann, M., Hall, B., Doss, J., Spencer, L., Matzner, R., PoMiN: A PostMinkowskian NBody Solver, ApJ 859 130 (2018) (arXiv:1805.00813) 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) 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 09192018 