Einstein is right on:-"Under the extreme conditions of this system, some scientists thought that the equations of General Relativity might not accurately predict the amount of gravitational radiation emitted, and thus change the rate of orbital decay. Competing gravitational theories, they thought, might prove more accurate in this system."-http://www.sciencedaily.com/releases/2013/04/130425142250.htm-or-http://phys.org/news/2013-04-einstein-gravity-theory-toughest-bizarre.html-Quantum loop gravity is a competing theory, but is not needed if this study is correct.