Deng Weiyi PhD Candidate, School of Physics, Sun Yat-sen University Research Focus: Cosmology, inflation, dark matter, large-scale structure of the universe, primordial non-Gaussianity, and theoretical calculations using the in-in formalism. Supervisor: I work in the research group of Associate Professor Chengcheng Han. Publications: Probing Non-Thermal Gravitinos Through Large-Scale Structure Observations Now working on: Fermion Production from an Axion-like Inflaton during Inflation and Preheating