Cosmological Constant, Conical Defect and Classical Tests of General Relativity

Details Cosmological Constant, Conical Defect and Classical Tests of General Relativity Cosmological Constant, Conical Defect and Classical Tests of General Relativity

2002-01-11

arxiv.org/abs/gr-qc/0201036v1

Gen.Rel.Grav. 33 (2001) 1407-1414

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, no figures, revtex

Scientific paper

We investigate the perihelion shift of the planetary motion and the bending of starlight in the Schwarzschild field modified by the presence of a $\Lambda$-term plus a conical defect. This analysis generalizes an earlier result obtained by Islam (Phys. Lett. A 97, 239, 1983) to the case of a pure cosmological constant. By using the experimental data we obtain that the parameter $\epsilon$ characterizing the conical defect is less than $10^{-9}$ and $10^{-7}$, respectively, on the length scales associated with such phenomena. In particular, if the defect is generated by a cosmic string, these values correspond to limits on the linear mass densities of $10^{19}g/cm$ and $10^{21}g/cm$, respectively.

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