Perforation of domain wall by point mass

Abstract

We investigate collision of a point particle and an infinitely thin planar domain wall interacting gravitationally within the linearized gravity in Minkowski space-time of arbitrary dimension. In this setting we are able to describe analytically the perforation of the wall by an impinging particle, showing that it is accompanied by excitation of the spherical shock branon wave propagating outwards with the speed of light. Formally, the shock wave is a free solution of the branon wave equation which has to be added to ensure the validity of the retarded solution at the perforation point. Physically, the domain wall gets excited due to the shake caused by an instantaneous change of sign of the repulsive gravitational force. This effect is shown to hold, in particular, in four space-time dimensions, being applicable to the problem of cosmological domain walls.

21 pages, 10 figures, revtex4

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Cited by in corpus (5)

• Piercing of domain walls: new mechanism of gravitational radiation
• Energy-momentum balance in particle - domain wall perforating collision
• Branestrahlung: radiation in the particle-brane collision
• Static configurations and evolution of higher dimensional brane-dilaton black hole system
• Dark matter cosmic string in the gravitational field of a black hole