%0 Journal Article %T Symbolic sequences and Tsallis entropy %A Ribeiro %A H. V. %A Lenzi %A E. K. %A Mendes %A R. S. %A Mendes %A G. A. %A da Silva %A L. R. %J Brazilian Journal of Physics %D 2009 %I Scientific Electronic Library Online %R 10.1590/S0103-97332009000400018 %X we address this work to investigate symbolic sequences with long-range correlations by using computational simulation. we analyze sequences with two, three and four symbols that could be repeated l times, with the probability distribution p(l) ¡Ø 1/l ¦Ì. for these sequences, we verified that the usual entropy increases more slowly when the symbols are correlated and the tsallis entropy exhibits, for a suitable choice of q, a linear behavior. we also study the chain as a random walk-like process and observe a nonusual diffusive behavior depending on the values of the parameter ¦Ì. %K symbolic sequences %K long-range correlations %K tsallis entropy %K non-usual diffusion. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-97332009000400018&lng=en&nrm=iso&tlng=en