Tuesday, 27 September 2016

Dear Dr B: What do physicists mean by �quantum gravity�?




[Image Source: giphy.com]

�please could you give me a simple definition of "quantum gravity"?

J.�

Dear J,
Physicists refer with �quantum gravity� not so much to a specific theory but to the sought-after solution to various problems in the established theories. The most pressing problem is that the standard model combined with general relativity is internally inconsistent. If we just use


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