Quantum gravity
Abstract
Quantum Gravity is the name given to any theory that describes gravity in the regimes where quantum effects cannot be disregarded. At present, there is no such a theory which is universally accepted and confirmed by experience. Therefore the term "Quantum Gravity" indicates more an open problem than a specific theory. Several research lines, at different levels of development, offer tentative solutions to the problem. These tentative quantumgravity theories are variously viewed as competing research directions, or as contributions to the common goal of finding the physically correct theory. The quest for the good quantum theory of gravity bears on a number of fundamental issues and it is sometimes presented as the most important open problem in fundamental physics: the "Holy Grail" of contemporary theoretical physics.
 Publication:

Scholarpedia
 Pub Date:
 May 2008
 DOI:
 10.4249/scholarpedia.7117
 Bibcode:
 2008SchpJ...3.7117R