On the Color-Singlet States in Many-Quark Model with the su(4)-Algebraic Structure. III

摘要

A phase structure and phase transitions are investigated in the modified Bonnquark model. The force strength, which represents the particle-hole typeinteraction, is devised so as to depend on the quark number, namely quarknumber density. As a result, it is shown that the phase transition from thequark-triplet state as a nucleon to the quark-pair state as acolor-superconducting state occurs as the density increases.