University of Kashan Journal of Nanostructures 2251-7871 2 1 2012 03 01 The Binding Energy of Diquark-Antidiquark System in Nanometer and Subnanometer Scales 125 129 5356 10.7508/jns.2012.01.015 EN P. Sadeghi-Alavijeh Department of Physics, University of Kashan, Kashan, I. R. Iran. M. Monemzadeh Department of Physics, University of Kashan, Kashan, I. R. Iran. N. Tazimi Department of Physics, University of Kashan, Kashan, I. R. Iran. Journal Article 2014 05 11 In this paper, using Monte Carlo Fortran code, we have obtained the binding energies for three different systems of diquark–antidiquark in distances from 0.01 to 15 nm. In [0.1 - 15] nm interval, we made use of Coulomb potential because in this interval, strong interaction is negligible. We have compared the binding energies of the systems with one another. The results of these comparisons were close to our anticipations. We also obtained the binding energy of one of the systems in the interval below 1 fm, where diquark-antidiquark systems comprise a tetraquark and the potential is of strong interaction type. Because of weak Coulomb interaction, strong interaction has been used as the basis of the calculations. The binding energy resulted is consistent with the existing references https://jns.kashanu.ac.ir/article_5356_f6b97773da2e879cf1d516aa082949b3.pdf