Hi there! I'm a physicist--I do theoretical work on topics related to general relativity. I am currently a postdoc working in the GRIT group of the CENTRA research unit at Instituto Superior Técnico. Here's my cv.

Notes

The Poor Man's Introduction to Tensors - These are my notes on tensors--they serve as an introduction to tensor calculus (in Euclidean space) accessible to those with a basic knowledge of linear algebra and vector calculus. For those who wish to read these notes on a mobile device, here is the two column version.
Last major update: December 31st 2017
(Most recent typo fixes added 11-22-2018)

Articles

Feng, J. C. Boundary conditions without boundary conditions for the AdS manifold, (2020) (arxiv:2002.08342)

Feng, J. C., Carloni, S. New class of generalized coupling theories, (2019) (arxiv:1910.06978). To appear in Physical Review D

Feng, J. C., Gasperín, E., Williams, J. L. Almost-Killing equation: Stability, hyperbolicity, and black hole Gauss law, Phys. Rev. D 100, 124034 (2019) (arxiv:1911.04354)

Bhattacharjee, C., Feng, J. C., Mahajan, S. M., Black hole in a superconducting plasma, Phys. Rev. D 99, 024027 (2019) (arxiv:1903.08117)

Feng, J. C., Some globally conserved currents from generalized Killing vectors and scalar test fields, Phys. Rev. D 98, 104035 (2018) (arxiv:1811.05312)

Bhattacharjee, C., Feng, J. C., Stark, D. J., Surveying the implications of generalized vortical dynamics in curved space-time, 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 laser-ranged 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 Wheeler-DeWitt Equation, Phys. Rev. D 98, 026024 (2018) ( arXiv:1802.08576)

Feng, J., Baumann, M., Hall, B., Doss, J., Spencer, L., Matzner, R., PoMiN: A Post-Minkowskian N-Body Solver, ApJ 859 130 (2018) (arXiv:1805.00813)

Feng, J. C., Matzner, R. A., From Path Integrals to the Wheeler-DeWitt Equation: On Time Evolution in Spacetimes With Spatial Boundary, Phys. Rev. D, 96:106005, Nov 2017 (arXiv:1708.07001)

Codes

PoMiN - This is a Post-Minkowskian N-Body 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 2020-02-20