# Testing Einstein’s E=mc2 in outer space

The most important problem in physics is known to be a creation of the so-called Theory of Everything – a unification of all forces in nature, including the electro-weak and strong interactions and gravitation. One of the most difficult steps in this direction is a developing of the quantum gravitation theory. To make some efforts in an achieving of the above mentioned goal, Professor Andrei Lebed has recently started to consider a problem about a weight of the simplest quantum object – a hydrogen atom - in the Earth’s gravitational field in the framework of the Theory of General Relativity. The results of his research show how unexpected novel physics might be. Indeed, the most famous equation, E = mc2, where m is a gravitational mass, has been demonstrated to survive only in average. Prof. Lebed has also suggested how to observe those rare events, where weight of a hydrogen atom is not equivalent to its energy (i.e., where the equation E = mc2 is broken), using experiments inside satellite (spacecraft) on the Earth’s orbit (see the picture). More information about these theoretical results and the suggested experiment can be found at: http://uanews.org/story/testing-einsteins-emc2-outer-space

A talk “Breakdown of the Equivalence between Passive Gravitational Mass and Energy for a Quantum Body” was delivered by Andrei Lebed at the Marcel Grossmann Meeting-13 on Recent Developments in Theoretical and Experimental General Relativity (July 1-7, Stockholm, Sweden) and will be published in the proceedings of the Meeting. For details of the calculations, see Prof. Lebed’s preprints in Cornell University Library:

http://xxx.lanl.gov/abs/1111.5365

http://xxx.lanl.gov/abs/1205.3134

http://xxx.lanl.gov/abs/1208.5756

This research was supported by the National Science Foundation.