Editing Standard Model (section)

=== Gravity ===
{{See also|Quantum gravity|Gravity}}

[[File:Fundamental Interactions.png|thumb|Fundamental Interactions of the Standard Model including the hypothetical graviton]]

Despite being perhaps the most familiar fundamental interaction, gravity is not described by the Standard Model, due to contradictions that arise when combining general relativity, the modern theory of gravity, and quantum mechanics.<ref>{{Cite journal |last=Ashtekar |first=Abhay |date=2005-09-29 |title=Gravity and the quantum |url=https://iopscience.iop.org/article/10.1088/1367-2630/7/1/198 |journal=New Journal of Physics |volume=7 |pages=198–198 |doi=10.1088/1367-2630/7/1/198 |issn=1367-2630|arxiv=gr-qc/0410054 }}</ref><ref>{{Cite journal |last=Kuchař |first=Karel V. |date=2011-07-31 |title=TIME AND INTERPRETATIONS OF QUANTUM GRAVITY |url=https://www.worldscientific.com/doi/abs/10.1142/S0218271811019347 |journal=International Journal of Modern Physics D |language=en |volume=20 |issue=supp01 |pages=3–86 |doi=10.1142/S0218271811019347 |issn=0218-2718|url-access=subscription }}</ref> However, gravity is so weak at microscopic scales, that it is essentially unmeasurable. The [[graviton]] is postulated to be the mediating particle, but has not yet been proved to exist.<ref>{{Cite journal |last=Carney |first=Daniel |date=2024 |title=Graviton detection and the quantization of gravity |url=https://journals.aps.org/prd/abstract/10.1103/PhysRevD.109.044009 |journal=Physical Review D |volume=109 |issue=4 |doi=10.1103/PhysRevD.109.044009|arxiv=2308.12988 }}</ref>