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General aspects of quantum gravity
Some aspects of quantum gravity that are independent of which of the possible approaches is chosen.
String theory
More about string theory - at present, mostly about the extra dimensions that play such a central role in that theory
Loop quantum gravity
More about loop quantum gravity, in particular its cosmological applications.
Other approaches to the problem of quantum gravity
While string theory and loop quantum gravity are the most prominent approaches to the problem of quantum gravity, they are not the only ones. Some other approaches are described in the following spotlights.
Physics in the background
Useful physics background information that may help with a better understanding of the other spotlight texts on this page.