Yong Zhang
Research Interests
I am interested in some basic problems in high-energy physics. Our dreams are, of course, to unify General Relativity and Quantum Field Theories. At present, I would like to have a better understanding of the basic concepts in these two theories. To be more concrete, we want to reproduce the scattering amplitudes, which are very invariant objects in many senses and are directly related to physical observables via cross-section, from some fundamental rules like locality, unitarity, possible gauge invariance, etc. Many novel structures have been found in this field like double copy relations between the amplitudes of different theories, which are obscure from traditional approaches using conventional Feynman diagrams. Further efforts in this direction not only have significance in working out some conceptual problems but also have direct applications to real physical experiments at LHC or in the observations of gravitational waves.
Positions Held
- Postdoctoral fellow, Department of Physics and Astronomy, Uppsala University, 2020-2021
- Ph.D. candidate, Institute of Theoretical Physics, Chinese Academy of Sciences, 2017-2020
Recent Publications
- Cachazo, F., Early, N., & Zhang, Y. (2024). Generalized color orderings: CEGM integrands and decoupling identities. Nuclear Physics B, 1004, 116552. doi:10.1016/j.nuclphysb.2024.116552
- Cachazo, F., Guevara, A., Umbert, B., & Zhang, Y. (2024). Planar matrices and arrays of Feynman diagrams. Communications in Theoretical Physics, 76(3), 035002. doi:10.1088/1572-9494/ad102d
- Edison, A., He, S., Johansson, H., Schlotterer, O., Teng, F., & Zhang, Y. (2022). Perfecting one-loop BCJ numerators in SYM and supergravity. doi:10.1007/JHEP02(2023)164
- Feng, B., He, S., Zhang, Y., & Zhang, Y. -Q. (n.d.). One-loop diagrams with quadratic propagators from the worldsheet. Journal of High Energy Physics, 2022(8), 240. doi:10.1007/jhep08(2022)240
- He, S., Hou, L., Tian, J., & Zhang, Y. (2021). Kinematic numerators from the worldsheet: cubic trees from labelled trees. doi:10.1007/JHEP08(2021)118
Seminars
- One-loop BCJ numerators with quadratic propagators from the worldsheet, Institute of Theoretical Physics, Chinese Academy of Sciences via zoom, 2022/01/01
- Yong Zhang, Postdoc Welcome 2021, 2021/10/29, PIRSA:21100044