3 papers
cond-mat.dis-nn2000
Random field O(N) spin model near four dimensions
Chigak Itoi, Hisamitsu Mukaida, Yoshinori Sakamoto
This paper has been withdrawn by the authors, due to a crucial error in beta functions.
cond-mat.stat-mech1999
Stability of a fixed point in the replica action for the random field Ising model
Hisamitsu Mukaida, Yoshinori Sakamoto
We reconsider stability of the non-trivial fixed point in dimensional effective action for the random field Ising model derived by Brézin and De Dominicis. After expansion pa…
cond-mat.stat-mech1997
Renormalization group for renormalization-group equations toward the universality classification of infinite-order phase transitions
Chigak Itoi, Hisamitsu Mukaida
We derive a new renormalization group to calculate a non-trivial critical exponent of the divergent correlation length which gives a universality classification of essential singul…