In the present work, interaction of two-dimensional 1s electron-hole excitons has been investigated. Fourier transformation has been applied to obtain the excitons interaction potentials (in coordinate space) from the matrix elements of the two-excitonic Hamiltonian (dependent on the excitons quasi-momenta). The analytic expressions obtained have been then utilized to numerically calculate the interaction between the excitons for me*=0.1me and mh = 0.5 me.

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