Does a Nambu-Goto wall emit gravitational waves? -- Cylindrical Nambu-Goto wall as an example of gravitating non-spherical walls --

Abstract

Gravitational field of a cylindrical Nambu-Goto wall in the vacuum spacetime is considered in order to clarify the interaction between Nambu-Goto membranes and gravitational waves. If one neglects the emission of gravitational waves by the wall motion, the spacetime becomes singular. It is also shown that the emission of gravitational waves does occur by the motion of the cylindrical wall if the initial data is singularity free. The energy loss rate due to radiation of gravitational waves agrees with that estimated from the test wall motion and the quadrupole formula for the gravitational wave emission. This is quite different from the oscillatory behavior of gravitating Nambu-Goto membranes: the presence of gravity induces the wall to lose its dynamical degree of freedom.

Accepted for publication in Physical Review D. Minor changes are made, and some typos are corrected

References in corpus (3)

• The dynamics of curved gravitating walls
• Dynamics of a string coupled to gravitational waves - Gravitational wave scattering by a Nambu-Goto straight string
• Dynamics of a string coupled to gravitational waves II - Perturbations propagate along an infinite Nambu-Goto string

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• Causal Structure and Gravitational Waves in Brane World Cosmology
• Construction of gauge-invariant variables of linear metric perturbations on an arbitrary background spacetime
• Second-order Gauge-invariant Cosmological Perturbation Theory: Current Status updated in 2019