title: Random bond ising systems on a general hierarchical lattice: exact inequalities
abstract: Random bond Ising systems on a general hierarchical lattice are considered. Interesting inequalities between eigenvalues of the Jacobian renormalization matrix at the pure fixed point are obtained. These lead to upper bounds on the crossover exponents straight phi(i).
authors.affiliation: School of Physics and Astronomy, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel.
authors.initials: A
authors.lastname: Efrat
authors.initials: M
authors.lastname: Schwartz