Chin. Phys. Lett.  2003, Vol. 20 Issue (2): 195-198    DOI:
Original Articles |
Extending the First-Order Post-Newtonian Scheme in Multiple Systems to the Second-Order Contributions to Light Propagation
XU Chong-Ming;WU Xue-Jun
Department of Physics, Nanjing Normal University, Nanjing 210097
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XU Chong-Ming, WU Xue-Jun 2003 Chin. Phys. Lett. 20 195-198
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Abstract We extend the first-order post-Newtonian scheme in multiple systems presented by Damour-Soffel-Xu to the second-order contribution to light propagation without changing the virtue of the scheme on the linear partial differential equations of the potential and vector potential. The spatial components of the metric are extended to the second-order level both in a global coordinates (qij/c4) and a local coordinates (Qab/c4). The equations of qij(or Qab) are obtained from the field equations. The relationship between qij and Qab are also presented. In the special case of the solar system (isotropic condition is applied (qij
= δijq)), we obtain the solution of q. Finally, a further extension of the second-order contributions in the parametrized post-Newtonian formalism is discussed.

Keywords: 04.25.Nx      04.30.Nk      95.45.+i      04.80.Cc     
Published: 01 February 2003
PACS:  04.25.Nx (Post-Newtonian approximation; perturbation theory; related Approximations)  
  04.30.Nk (Wave propagation and interactions)  
  95.45.+i (Observatories and site testing)  
  04.80.Cc (Experimental tests of gravitational theories)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2003/V20/I2/0195
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