Yong Zhang

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.