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{{short description|Description of gravity using discrete values}}
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[[File:cube_of_theoretical_physics.svg|thumb|upright=1.1|A depiction of the [[cGh physics|''cGh'' cube]] ]]▼
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'''Quantum gravity''' ('''QG''') is a field of [[theoretical physics]] that seeks to describe gravity according to the principles of [[quantum mechanics]]. It deals with environments in which neither [[Gravity|gravitational]] nor quantum effects can be ignored,<ref name="scholarpedia">{{cite journal | last = Rovelli | first = Carlo | author-link = Carlo Rovelli | year = 2008| title = Quantum gravity | journal = [[Scholarpedia]] | volume = 3 | issue = 5| page = 7117 | doi = 10.4249/scholarpedia.7117 | bibcode = 2008SchpJ...3.7117R | doi-access = free }}</ref> such as in the vicinity of [[black holes]] or similar compact astrophysical objects, such as [[neutron stars]],<ref name="NYT-20221010">{{cite news |last=Overbye |first=Dennis |author-link=Dennis Overbye |title=Black Holes May Hide a Mind-Bending Secret About Our Universe - Take gravity, add quantum mechanics, stir. What do you get? Just maybe, a holographic cosmos. |url=https://www.nytimes.com/2022/10/10/science/black-holes-cosmology-hologram.html |date=10 October 2022 |work=[[The New York Times]] |access-date=16 October 2022 |archive-date=16 November 2022 |archive-url=https://web.archive.org/web/20221116151210/https://www.nytimes.com/2022/10/10/science/black-holes-cosmology-hologram.html |url-status=live }}</ref> as well as in the early stages of the universe moments after the [[Big Bang]].<ref>{{Cite book |last=Kiefer |first=Claus |title=Quantum gravity |date=2012 |publisher=Oxford University Press |isbn=978-0-19-958520-5 |edition=3rd |series=International series of monographs on physics |location=Oxford |pages=1–4 |language=en}}</ref>
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