Post-Newtonian Limits and Gravitational Radiation from the Superstring Effective Action

Details Post-Newtonian Limits and Gravitational Radiation from the Superstring Effective Action Post-Newtonian Limits and Gravitational Radiation from the Superstring Effective Action

1994-03-29

arxiv.org/abs/gr-qc/9403053v1

Nucl.Phys. B423 (1994) 305-326

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

25 pages, LATEX, THEF-NYM-93.14

Scientific paper

10.1016/0550-3213(94)90574-6

We consider the gravitational sector of the superstring effective action with axion-matter couplings. The field equations are developed in the post-Newtonian scheme and approximate solutions for a spinning point mass and a cosmic string are presented. Furthermore, assuming vanishing axion mass and vanishing potential for the dilaton, we consider the gravitational radiation in the leading $O(\alpha'^0)$ order. We find that the total luminosity of a radiative source has monopole and dipole components besides the standard quadrupole one. These components may possibly be checked in binary systems.

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