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True radiation gauge for gravity
Chen, Xiang-Song1,2,3; Zhu, Ben-Chao1
Source PublicationPHYSICAL REVIEW D
AbstractCorresponding to the similarity between the Lorentz gauge partial derivative(mu)A(mu) = 0 in electrodynamics and g(mu nu)Gamma(rho)(mu nu) = 0 in gravity, we show that the counterpart of the radiation gauge partial derivative(i)A(i) = 0 is g(ij)Gamma(rho)(ij) = 0, instead of other forms as discussed before. Particularly, 1) at least for a weak field, g(ij)Gamma(rho)(ij) = 0 fixes the gauge completely and picks out exactly the two physical components of the gravitational field; 2) like A(0), the nondynamical components h(0 mu) are solved instantaneously; 3) gravitational radiation is generated by the "transverse" part of the energy-momentum tensor, similar to the transverse current (J) over right arrow (perpendicular to). This "true" radiation gauge g(ij)Gamma(rho)(ij) = 0 is especially pertinent for studying gravitational energy, such as the energy flow in gravitational radiation. It agrees with the transverse-traceless gauge for a pure wave, and reveals remarkably how the transverse-traceless gauge can be adapted in the presence of source.
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000288006000001
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Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China
2.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China
3.CAS, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Chen, Xiang-Song,Zhu, Ben-Chao. True radiation gauge for gravity[J]. PHYSICAL REVIEW D,2011,83(6).
APA Chen, Xiang-Song,&Zhu, Ben-Chao.(2011).True radiation gauge for gravity.PHYSICAL REVIEW D,83(6).
MLA Chen, Xiang-Song,et al."True radiation gauge for gravity".PHYSICAL REVIEW D 83.6(2011).
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