Articles dans des revues à comité de lecture
|Relaxation at finite temperature in Fully-Frustrated Ising Models|
|Walter J.C., Chatelain C.|
|J. Stat. Mech. (2012) P02010|
|DOI : 10.1088/1742-5468/2012/02/P02010|
|ArXiv : arxiv:1112.4666 [PDF]|
|HAL : hal-00653816|
We consider by means of Monte Carlo simulations the relaxation in the paramagnetic phase of the anti-ferromagnetic Ising model on a triangular lattice and of a fully-frustrated Ising model on a square lattice. In contradistinction to previous studies of the second model, we show that spin-spin correlation functions do not decay with a stretched-exponential law at low temperature but that both models display an exponential decay with logarithmic corrections that are interpreted as the signature of topological defects.