Articles dans des revues à comité de lecture
|Logarithmic corrections in the aging of the Fully-Frustrated Ising model|
|Walter J.-C., Chatelain C.|
|J. Stat. Mech. (2008) P07005|
|DOI : 10.1088/1742-5468/2008/07/P07005|
|ArXiv : arxiv:0707.1959 [PDF]|
|HAL : hal-00162367|
We study the dynamics of the critical two-dimensional fully-frustrated Ising model by means of Monte Carlo simulations. The dynamical exponent is estimated at equilibrium and is shown to be compatible with the value $z_c=2$. In a second step, the system is prepared in the paramagnetic phase and then quenched at its critical temperature $T_c=0$. Numerical evidences for the existence of logarithmic corrections in the aging regime are presented. These corrections may be related to the topological defects observed in other fully-frustrated models. The autocorrelation exponent is estimated to be $\lambda=d$ as for the Ising chain quenched at $T_c=0$.