Rigorous properties of path integrals using several regularization schemes and Wilson`s renormalization group ideas -- nonlinear transformations in path integrals.
Use of low-energy effective lagrangians to describe nuclear physics.
Rigorous quantization, canonical and via path integrals, of singular potentials, which requires field theory type regularization and renormalization. Applications bound-state problems in quantum field theory, molecular physics and non-perturbative aspects of Higgs physics
