IFEG   20353
INSTITUTO DE FISICA ENRIQUE GAVIOLA
Unidad Ejecutora - UE
artículos
Título:
Walks with up to two monomers per site on the Bethe lattice: Interpolation between models with immediate reversals allowed and immediate reversals forbidden
Autor/es:
PABLO SERRA; JURGEN F. STILCK
Revista:
PHYSICAL REVIEW E - STATISTICAL PHYSICS, PLASMAS, FLUIDS AND RELATED INTERDISCIPLINARY TOPICS
Editorial:
American Physica
Referencias:
Año: 2011 vol. 83 p. 12101 - 121014
ISSN:
1063-651X
Resumen:
We generalize earlier calculations of the RA (immediate reversals
allowed) and RF (immediate reversals forbidden) model with multiple
monomers per site, including a parameter in the model, so that both
cases studied before are particular cases of the model considered here.
Also, we calculate the bulk free energy of the model using Gujratis
prescription, which leads to corrections in the localization of
coexistence lines and qualitative changes in the phase diagram of the
model. Thus, this calculation provides an example in which the use of
the method of iterating recursion relations starting with natural
initial conditions to locate coexistence loci is not trustworthy and may
lead to qualitatively different results. A continuous collapse
transition appears in all cases as a tricritical point.