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23 papers · 1 filter
Reply to a comment on "A Comparison Between Broad Histogram and Multicanonical Methods"
A. R. Lima, T. J. P. Penna, P. M. C. de Oliveira
This is a reply to the comment by M. Kastner and M. Promberger [cond-mat/0011516] on the paper published in J. Stat. Phys. 99, 691 (2000) and also in cond-mat/0002176. We show that…
High Temperature Expansion for a Chain Model
Onofre Rojas, S. M. de Souza, M. T. Thomaz
We consider an arbitrary translationally invariant chain model with nearest neighbors interaction and satisfying periodic boundary condition. The approach developed here allows a t…
Breakdown of the perturbative renormalization group for S >= 1 random antiferromagnetic spin chains
A. Saguia, B. Boechat, M. A. Continentino +1
We investigate the application of a perturbative renormalization group (RG) method to random antiferromagnetic Heisenberg chains with arbitrary spin size. At zero temperature we ob…
The Isospin Asymmetry in the Pseudo-spin Dynamical Symmetry
P. Alberto, M. Fiolhais, M. Malheiro +2
Pseudo-spin symmetry in nuclei is investigated considering the Dirac equation with a Lorentz structured Woods-Saxon potential. The isospin correlation of the energy splittings of p…
Simulated emergence of cyclic sexual-asexual reproduction
J. S. Sa' Martins, Adriana Racco
Motivated by the cyclic pattern of reproductive regimes observed in some species of green flies (``{\it aphids}''), we simulate the evolution of a population enduring harsh seasona…
Simulated ecology-driven sympatric speciation
J. S. Sa' Martins, S. Moss de Oliveira, G. A. de Medeiros
We introduce a multi-locus genetically acquired phenotype, submitted to mutations and with selective value, in an age-structured model for biological aging. This phenotype describe…