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8 papers · 2 filters
A Class of Collisions of Plane Impulsive Light--Like Signals in General Relativity
C. Barrabes, P. A. Hogan
We present a systematic study of collisions of homogeneous, plane--fronted, impulsive light--like signals which do not interact after head--on collision. For the head--on collision…
The Aichelburg-Sexl Boost of Domain-Walls and Cosmic Strings
C. Barrabes, P. A. Hogan, W. Israel
We consider the application of the Aichelburg-Sexl boost to plane and line distributions of matter. Our analysis shows that for a domain wall the space-time after the boost is flat…
Quantum phase shift and neutrino oscillations in a stationary, weak gravitational field
Bernard Linet, Pierre Teyssandier
A new method based on Synge's world function is developed for determining within the WKB approximation the gravitationally induced quantum phase shift of a particle propagating in…
Recoil and Ring--Down Effects in Gravitation
C. Barrabes, P. A. Hogan
We construct a model of a relativistic fireball or light--like shell of matter by considering a spherically symmetric moving gravitating mass experiencing an impulsive deceleration…
What did we learn from studying acoustic black holes ?
Renaud Parentani
The study of acoustic black holes has been undertaken to provide new insights about the role of high frequencies in black hole evaporation. Because of the infinite gravitational re…
Existence of non-trivial, vacuum, asymptotically simple space-times
Piotr T. Chrusciel, Erwann Delay
We construct non-trivial vacuum space-times with a global Scri. The construction proceeds by proving extension results across compact boundaries for initial data sets, adapting the…