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Radiation from a D-dimensional collision of shock waves: higher order set up and perturbation theory validity
Flávio S. Coelho, Carlos Herdeiro, Carmen Rebelo +1
The collision of two D-dimensional, ultra-relativistic particles, described in General Relativity as Aichelberg-Sexl shock waves, is inelastic. In first order perturbation theory,…
On the scalar graviton in n-DBI gravity
Flavio S. Coelho, Carlos Herdeiro, Shinji Hirano +1
n-DBI gravity is a gravitational theory which yields near de Sitter inflation spontaneously at the cost of breaking Lorentz invariance by a preferred choice of foliation. We show t…
Radiation from a D-dimensional collision of shock waves: a remarkably simple fit formula
Flávio S. Coelho, Carlos Herdeiro, Marco O. P. Sampaio
Recently, in arXiv:1105.2298 [hep-th], we have estimated the energy radiated in the head-on collision of two equal D-dimensional Aichelburg-Sexl shock waves, for even D, by solving…