Editing Neutron (section)

=== Neutron stars and neutron matter ===
{{Main|Neutron matter|Neutron star}}
At extremely high pressures and temperatures, nucleons and electrons are believed to collapse into bulk neutronic matter, called [[neutron matter]]. This is presumed to happen in [[neutron star]]s.<ref>{{Cite journal |last1=Gandolfi |first1=Stefano |last2=Gezerlis |first2=Alexandros |last3=Carlson |first3=J. |date=2015-10-19 |title=Neutron Matter from Low to High Density |url=https://www.annualreviews.org/doi/10.1146/annurev-nucl-102014-021957 |journal=Annual Review of Nuclear and Particle Science |language=en |volume=65 |issue=1 |pages=303–328 |doi=10.1146/annurev-nucl-102014-021957 |issn=0163-8998 |arxiv=1501.05675 |bibcode=2015ARNPS..65..303G |access-date=2024-01-04 |archive-date=2022-06-14 |archive-url=https://web.archive.org/web/20220614180255/https://www.annualreviews.org/doi/10.1146/annurev-nucl-102014-021957 |url-status=live }}</ref>

The extreme pressure inside a neutron star may deform the neutrons into a cubic symmetry, allowing tighter packing of neutrons.<ref>{{cite journal |last1=Llanes-Estrada|arxiv=1108.1859|title=Cubic neutrons |year=2012 |first1=Felipe J. |first2=Gaspar|last2= Moreno Navarro |doi=10.1142/S0217732312500332 |volume=27 |issue=6|pages=1250033–1–1250033–7|journal=[[Modern Physics Letters A]]|bibcode=2012MPLA...2750033L|s2cid=118407306}}</ref>