Gyromagnetic factors and atomic clock constraints on the variation of fundamental constants

Simple item page
dc.contributor.authorLuo, Feng
dc.contributor.authorOlive, Keith A
dc.contributor.authorUzan, Jean-Philippe
dc.date.accessioned2021-10-08T07:11:31Z
dc.date.available2021-10-08T07:11:31Z
dc.date.issued2011
dc.description.abstractWe consider the effect of the coupled variations of fundamental constants on the nucleon magnetic moment. The nucleon g-factor enters into the interpretation of the measurements of variations in the fine-structure constant, alpha, in both the laboratory (through atomic clock measurements) and in astrophysical systems (e.g. through measurements of the 21 cm transitions). A null result can be translated into a limit on the variation of a set of fundamental constants, that is usually reduced to alpha. However, in specific models, particularly unification models, changes in alpha are always accompanied by corresponding changes in other fundamental quantities such as the QCD scale, Lambda_QCD. This work tracks the changes in the nucleon g-factors induced from changes in Lambda_QCD and the light quark masses. In principle, these coupled variations can improve the bounds on the variation of alpha by an order of magnitude from existing atomic clock and astrophysical measurements. Unfortunately, the calculation of the dependence of g-factors on fundamental parameters is notoriously model-dependent.
dc.identifier.apacitationLuo, F., Olive, K. A., & Uzan, J. (2011). Gyromagnetic factors and atomic clock constraints on the variation of fundamental constants. <i>Physical Review D - Particles and Fields</i>, 84(9), 174 - 177. http://hdl.handle.net/11427/34632en_ZA
dc.identifier.chicagocitationLuo, Feng, Keith A Olive, and Jean-Philippe Uzan "Gyromagnetic factors and atomic clock constraints on the variation of fundamental constants." <i>Physical Review D - Particles and Fields</i> 84, 9. (2011): 174 - 177. http://hdl.handle.net/11427/34632en_ZA
dc.identifier.citationLuo, F., Olive, K.A. & Uzan, J. 2011. Gyromagnetic factors and atomic clock constraints on the variation of fundamental constants. <i>Physical Review D - Particles and Fields.</i> 84(9):174 - 177. http://hdl.handle.net/11427/34632en_ZA
dc.identifier.issn0556-2821
dc.identifier.issn1089-4918
dc.identifier.ris TY - Journal Article AU - Luo, Feng AU - Olive, Keith A AU - Uzan, Jean-Philippe AB - We consider the effect of the coupled variations of fundamental constants on the nucleon magnetic moment. The nucleon g-factor enters into the interpretation of the measurements of variations in the fine-structure constant, alpha, in both the laboratory (through atomic clock measurements) and in astrophysical systems (e.g. through measurements of the 21 cm transitions). A null result can be translated into a limit on the variation of a set of fundamental constants, that is usually reduced to alpha. However, in specific models, particularly unification models, changes in alpha are always accompanied by corresponding changes in other fundamental quantities such as the QCD scale, Lambda_QCD. This work tracks the changes in the nucleon g-factors induced from changes in Lambda_QCD and the light quark masses. In principle, these coupled variations can improve the bounds on the variation of alpha by an order of magnitude from existing atomic clock and astrophysical measurements. Unfortunately, the calculation of the dependence of g-factors on fundamental parameters is notoriously model-dependent. DA - 2011 DB - OpenUCT DP - University of Cape Town IS - 9 J1 - Physical Review D - Particles and Fields LK - https://open.uct.ac.za PY - 2011 SM - 0556-2821 SM - 1089-4918 T1 - Gyromagnetic factors and atomic clock constraints on the variation of fundamental constants TI - Gyromagnetic factors and atomic clock constraints on the variation of fundamental constants UR - http://hdl.handle.net/11427/34632 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34632
dc.identifier.vancouvercitationLuo F, Olive KA, Uzan J. Gyromagnetic factors and atomic clock constraints on the variation of fundamental constants. Physical Review D - Particles and Fields. 2011;84(9):174 - 177. http://hdl.handle.net/11427/34632.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Mathematics and Applied Mathematics
dc.publisher.facultyFaculty of Science
dc.sourcePhysical Review D - Particles and Fields
dc.source.journalissue9
dc.source.journalvolume84
dc.source.pagination174 - 177
dc.source.urihttps://dx.doi.org/10.1103/PhysRevD.84.096004
dc.subject.otherphysics of elementary particles and fields
dc.subject.otherastrophysics
dc.subject.othercomputerized simulation
dc.subject.otherd quarks
dc.subject.otherfine structure
dc.subject.otherfundamental constants
dc.subject.otherlande factor
dc.subject.othermagnetic moments
dc.subject.othermass
dc.subject.othernucleons
dc.subject.otherquantum chromodynamics
dc.subject.otheru quarks baryons
dc.subject.otherdimensionless numbers
dc.subject.otherelementary particles
dc.subject.otherfermions
dc.subject.otherfield theories
dc.subject.otherhadrons
dc.subject.otherphysics
dc.subject.otherquantum field theory
dc.subject.otherquarks
dc.subject.othersimulation
dc.titleGyromagnetic factors and atomic clock constraints on the variation of fundamental constants
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LuoFeng_Gyromagnetic_fa_2011.pdf
Size:
456.94 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Journal Articles