Tachyon Monopole

Details Tachyon Monopole Tachyon Monopole

2005-10-28

arxiv.org/abs/gr-qc/0510116v1

Int.J.Mod.Phys. A20 (2005) 5491-5499

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, no figure, has been published in IJMPA

Scientific paper

10.1142/S0217751X0502848X

The property and gravitational field of global monopole of tachyon are investigated in a four dimensional static space-time. We give an exact solution of the tachyon field in the flat space-time background. Using the linearized approximation of gravity, we get the approximate solution of the metric. We also solve analytically the coupled Einstein and tachyon field equations which is beyond the linearized approximation to determine the gravitational properties of the monopole solution. We find that the metric of tachyon monopole represents an asymptotically AdS space-time with a small effective mass at the origin. We show that this relatively tiny mass is actually negative, as it is in the case of ordinary scalar field.

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