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#Mon Aug 09 12:15:07 CEST 2010
Text__6iOo0KOeEd-WfYQ0GneCwQ_title=Quantum theory + gravitation \= ?
Text__6iOo0KOeEd-WfYQ0GneCwQ_text=If physicists want to describe the interior of black holes or the beginning of the universe, they need a theory of <strong>quantum gravity</strong> encompassing both Einstein's theory of general relativity and quantum theory. However, the search for such a theory has proved to be exceedingly difficult. Even now, more than 60 years after they began, physicists do not have a complete answer. However, there are promising candidate theories\: We briefly present the most important ones in the sequences <strong>A world based on oscillations\: string theory</strong> and <strong>Building blocks of space and time\: Loop quantum gravity</strong>