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Since the introduction of quantum potential in the de Broglie-Bohm interpretation of the quantum theory and taking into consideration that the quantum potential does not fall with distance, some researchers have tried tond signs of this property at large scales. For example A.Shojai and F.Shojai in an article titled "De Broglie-Bohm quantum theory and perihelion precession" strive to explain the perihelion precession of planets with this idea. In the present article, we show that the extension of quantum potential on the macroscopic scale is not as simple as expressed in that work, and to use quantum potential in the planetary motion, the time dependence of the probability density needs to be considered more carefully. We also consider the method of solving the equations and the assumptions made for the their solution. The conclusion is that A.Shojai and F.Shojai's approach to explain the perihelion precession of planets in terms of quantum potential is not correct.
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