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Stacking a 4D geometry into an Einstein-Gauss-Bonnet bulk
Carlos Barcelo, Roy Maartens, Carlos F. Sopuerta +1
In Einstein gravity there is a simple procedure to build D-dimensional spacetimes starting from (D-1)-dimensional ones, by stacking any (D-1)-dimensional Ricci-flat metric into the…
Braneworld physics from the analog-gravity perspective: finiteness effects
Carlos Barcelo, Antonio Campos
We study Randall-Sundrum brane models from the viewpoint of condensed matter/quantum optics. Following the idea of analog gravity we obtain effective metrics in fluid and Bose-Eins…
Twilight for the energy conditions?
Carlos Barcelo, Matt Visser
The tension, if not outright inconsistency, between quantum physics and general relativity is one of the great problems facing physics at the turn of the millennium. Most often, th…
Bi-refringence versus bi-metricity
Matt Visser, Carlos Barcelo, Stefano Liberati
In this article we carefully distinguish the notion of bi-refringence (a polarization-dependent doubling in photon propagation speeds) from that of bi-metricity (where the two phot…