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Phys. Rev. D 62, 101502 (2000) [5 pages]

Dynamics of a string coupled to gravitational waves: Gravitational wave scattering by a Nambu-Goto straight string

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Kouji Nakamura *
Department of Physics, Keio University, Hiyoshi Yokohama, 223-8521, Japan

Akihiro Ishibashi †
Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan

Hideki Ishihara ‡
Tokyo Institute of Technology, Oh-Okayama Meguro-ku, Tokyo 152-0033, Japan

Rapid Communication Received 19 April 2000; published 13 October 2000

We study the perturbative dynamics of an infinite gravitating Nambu-Goto string within the general-relativistic perturbation framework. We develop the gauge invariant metric perturbation on a spacetime containing a self-gravitating straight string with a finite thickness and solve the linearized Einstein equation. In the thin string case, we show that the string does not emit gravitational waves by its free oscillation in the first order with respect to its oscillation amplitude; nevertheless the string actually bends when the incidental gravitational waves go through it.


©2000 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevD.62.101502
DOI: 10.1103/PhysRevD.62.101502
PACS: 04.30.Db, 11.27.+d, 98.80.Cq

* Email address: kouchan@phys-h.keio.ac.jp
† Email address: akihiro@yukawa.kyoto-u.ac.jp
‡ Email address: ishihara@th.phys.titech.ac.jp

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