Scientists / Open questions
Hideki Yukawa
Particle physics; theory of nuclear forces
1949 Nobel Prize in Physics
4 questions
Open questions from Yukawa's 1953 oscillator model of nonlocal fields: convergence of the full S-matrix, quantization with external–internal coupling, and dynamical removal of the infinite mass degeneracy
Consistent completion of Yukawa's 1953 nonlocal-field program for the elementary-particle mass spectrum
Finiteness of the S-matrix in non-local quantum field theory: conditions for ultraviolet finiteness with unitarity and causality
Consistent interacting theory of Yukawa-type nonlocalizable fields: the coexistence of two or more interacting nonlocalizable fields