Automorphic representations and their L-functions carry important arithmetic information and are still actively research subjects. Many research results have been discovered through the theta correspondence and the doubling method. The aim of my research is to develop the local and global theories of automorphic L-functions of classical groups through a generalization of the doubling method.

Moreover, the theory of automorphic representations of Brylinski-Deligne covering groups (BD covering groups) of reductive groups has also attracted attention in recent years. I am also interested in the theories of automorphic L-functions and automorphic representations of BD covering groups.