We investigate the interaction between H-dibaryons employing a quark cluster model with a one-gluon-exchange potential and an effective meson exchange potential ( EMEP ) .
A deeply-bound state of two H-dibaryons due to the medium range attraction of the EMEP is obtained .
The bound H–H system has a size of about 0.8 \sim 0.9 fm because of the short-range repulsion generated by the color-magnetic interaction and the Pauli principle .