Global well-posedness for generalized fractional Hartree equations with rough initial data in all dimensions

We prove the global existence of the solution for fractional Hartree equations with initial data in certain real interpolation spaces between $L^2$ and some kinds of new function spaces defined by fractional Schrödinger semigroup, which could imply the global well-posedness of the equation in modulation spaces $M_{p,p^{\mathrm{\prime }}}^{s_p}$ for $p$ close to 2 with no smallness condition on initial data, where $s_p=(m-2)(1\mathrm{/}2-1\mathrm{/}p)$. The proof adapts a splitting method inspired by the work of Hyakuna-Tsutsumi, Chaichenets et al. to the modulation spaces and exploits polynomial growth of the fractional Schrödinger semi-group on modulation spaces $M_{p,p^{\mathrm{\prime }}}$ with loss of regularity $s_p$.