Branestrahlung: radiation in the particle-brane collision
arXiv:1512.04607 · doi:10.1103/PhysRevD.93.045018
Abstract
We calculate the radiation accompanying gravitational collision of the domain wall and the point particle in five-dimensional spacetime. This process, which can be regarded as brane-particle bremsstrahlung, here called {\it branestrahlung}, has unusual features. Since the brane has intrinsic dynamics, it gets excited in the course of collision, and, in particular, at the moment of perforation the shock branon wave is generated, which then expands with the velocity of light. Therefore, apart from the time-like source, whose radiation can be computed in a standard way, the total radiation source contains a light-like part whose retarded field is quite non-trivial, exhibiting interesting retardation and memory effects. We analyze this field in detail, showing that, contrary to the claims that the light-like sources should not radiate at all, the radiation is non-zero and has classically divergent spectrum. We estimate the total radiation power introducing appropriate cutoffs. In passing, we explain how the sum of the non-local (with the support inside the light cone) and the local (supported on the cone) singular parts of the Green's function of the five-dimensional d'Alembert equation together define a regular functional.
18 pages revtex4, 3 figures, journal version
References in corpus (17)
- A perturbative and gauge invariant treatment of gravitational wave memory
- Retarded Fields of Null Particles and the Memory Effect
- Merger Transitions in Brane--Black-Hole Systems: Criticality, Scaling, and Self-Similarity
- Examination of a simple example of gravitational wave memory
- Global aspects of radiation memory
- Massless interacting particles
- Critical escape velocity of black holes from branes
- Effective action of a five-dimensional domain wall
- Electromagnetic fields and potentials generated by massless charged particles
- Electrodynamics of massless charged particles
- Branes and Black holes in Collision
- Perforation of domain wall by point mass
- Energy-momentum balance in particle - domain wall perforating collision
- Vector Bremsstrahlung by Ultrarelativistic Collisions in Higher Dimensions
- A topologically flat thick 2-brane on higher dimensional black hole backgrounds
- Synchrotron radiation from massless charge
- Axisymmetric Dirac-Nambu-Goto branes on Myers-Perry black hole backgrounds