relations between energy of graphs and wener, harary indices

Harary and wiener indices are distance-based topological index. in this paper, we study the relations of graph energy $varepsilon(g)$ and its harary index $textup{h}(g)$ and wiener index $textup{w}(g)$. moreover, for a given graph $g$ we study the lower bound of $frac{textup{h}(g)}{varepsilon(g)}$ and $frac{textup{w}(g)}{varepsilon(g)}$ in terms of number of vertices of $g$.