%0 Journal Article %T Semigroups of Composition Operators on Hardy Spaces of the half-plane %A Athanasios G. Arvanitidis %J Mathematics %D 2011 %I arXiv %X We identify the semigroups consisting of bounded composition operators on the Hardy spaces $H^p(\U)$ of the upper half-plane. We show that any such semigroup is strongly continuous on $H^p(\U)$ but not uniformly continuous and we identify the infinitesimal generator. %U http://arxiv.org/abs/1109.5275v1