Dynamics of the random one-dimensional transverse Ising model
J. Florencio, F. C. Sá Barreto
We study the dynamics of the spin-1/2 random transverse Ising model in the high-temperature limit by means of the method of recurrence relations. We analyze two types of disorder: a disorder on the transverse field, and a disorder on the exchange coupling. We find that the dynamics undergoes a crossover from a central peak behavior onto a collective mode behavior as a function of the disorder.
Physical review. B, Condensed matter•Oct 1, 1999•34 citations