We use the cluster variation method (CVM) and Monte Carlo simulations to investigate the phase structure of the 3d gonihedric Ising actions defined by Savvidy and Wegner. This model corresponds to the usual three-dimensional cubic Ising model with nearest, next to the nearest, and plaquette interactions in the region with degenerate lamellar ground states. The picture of the phase diagram given by the CVM is in good agreement with the results of Monte Carlo simulations, and it is shown that the gonihedric model is in the same universality class of the ordinary three-dimensional Ising model.
Critical behaviour of the three-dimensional gonihedric Ising model / Cirillo, Emilio Nicola Maria; G., Gonnella; A., Pellizzola. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - STAMPA. - 63:1-3(1998), pp. 622-624. [10.1016/s0920-5632(97)00851-7]
Critical behaviour of the three-dimensional gonihedric Ising model
CIRILLO, Emilio Nicola Maria;
1998
Abstract
We use the cluster variation method (CVM) and Monte Carlo simulations to investigate the phase structure of the 3d gonihedric Ising actions defined by Savvidy and Wegner. This model corresponds to the usual three-dimensional cubic Ising model with nearest, next to the nearest, and plaquette interactions in the region with degenerate lamellar ground states. The picture of the phase diagram given by the CVM is in good agreement with the results of Monte Carlo simulations, and it is shown that the gonihedric model is in the same universality class of the ordinary three-dimensional Ising model.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
