Professor Kong Lingxin's main research fields are gauge field theory/gravitational field theory correspondence (ADS/CFT correlation) and its applications in quantum entanglement and quantum informatics. At the same time, she is very interested in the basic structure of quantum field, including the research and application of renormalization group flow and non-equilibrium state, the classification of topological States in condensed matter physics and related physical phenomena.
Her most outstanding achievement in recent years is to discuss with her collaborators for the first time the contribution of the correction of high derivative of gravity in ADS/CFT Coherence to the corresponding entanglement entropy of field theory. In mid-2013, she and her collaborators further discovered that the inequality satisfied by entanglement entropy in field theory is closely related to Ai En's Stein equation in gravity theory. This discovery has important implications for finally understanding the structure of quantum gravity. He has published more than 60 papers and has been cited more than 2000 times.