Deformation of a renormalization-group equation applied to infinite-order phase transitions.
By adding a linear term to a renormalization-group equation in a system exhibiting infinite-order phase transitions, the asymptotic behavior of running coupling constants is derived in an algebraic manner. A benefit of this method is presented explicitly using several examples.
Mukaida
Hisamitsu
H
Department of Physics, Saitama Medical College, 981 Kawakado, Iruma-gun, Saitama, 350-0496, Japan. mukaida@saitama-med.ac.jp