Three properties of the Edwards-Anderson model with mobile bonds are
investigated which are characteristic of kinetic glasses. First is two-time
relaxation in aged systems, where a significant difference is observed between
spin and bond autocorrelation functions. The spin subsystem does not show
two-time behavior, and the relaxation is stretched exponential. The bond
subsystem shows two-time behavior, with the first relaxation nearly exponential
and the second similar to the spin one. Second is the two-temperature behavior,
which can be tuned by bond dilution through the full range reported in the
literature. Third is the rigid-to-floppy transition, identified as a function
of bond dilution. Simple Glauber Monte Carlo evolution without extraneous
constraints reproduces the behavior of classical kinetic simulations, with the
bond (spin) degree of freedom corresponding to configurational (orientational)
disorder.Comment: 4 pages, 3 figures, minimal corrections, to appear in Phys. Rev. B
(RC
