Japanese page English page is open. >>Japanese page is here. In 1988, SOKENDAI (The Graduate University for Advanced Studies) was established as a national university, which consists only of graduate school (As is the case with all national universities, it became a national university corporation in 2004, following the global reorganization of national universities into independent administrative institutions). SOKENDAI has many advantages for future researchers who aim at acquiring broad perspectives and originality, compared with ordinary graduate schools in association with national universities. The students in our department are assigned either to the theory group or to the experimental group in KEK (High Energy Accelerator Research Organization), and can receive fruitful education --- from basic lectures to supervision for research activities --- by KEK faculty members, who also belong to SOKENDAI. The merits of our department are summarized as follows. Phenomenological particle physics (Supersymmetric models, Grand unified models, Brane world etc.) Lattice gauge theory (Lattice field theory, Lattice QCD simulation etc.) Superstring theory (Non-perturbative analysis using matrix models, Noncommutative geometry etc.) Gravity (Black hole, Cosmology, Quantum gravity etc.), Fundamental aspects of quantum theory Hadron physics, Nuclear physics (Structure function, Phase structure of QCD, Exotic nuclear matter etc.) B-factory experiment (CP violation, B meson physics, Tau lepton physics) Ultra-high energy experiment (Hadron collider accelerator, Linear collider) High intensity proton accelerator experiment (Hadron beam particle and nuclear experiment, Neutrino experiment) Non-accelerator experiment (Low energy particle and nuclear experiment, Cosmo particle experiment) Advanced technological developments (Quantum beam, Superconductivity and low temperature technology, Online electronics)