1.1k citations · 5k across the 46 of their papers we have counts for
Showing 2007 · hep-thShow all
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hep-th2007★ 450 cited
k-Essence, superluminal propagation, causality and emergent geometry
Eugeny Babichev, Viatcheslav Mukhanov, Alexander Vikman
The k-essence theories admit in general the superluminal propagation of the perturbations on classical backgrounds. We show that in spite of the superluminal propagation the causal…
hep-th2007★ 14 cited
Looking beyond the horizon
Eugeny Babichev, Viatcheslav Mukhanov, Alexander Vikman
In this short talk we review our results from the paper hep-th/0604075 with the main stress on the issues of causality and acoustic metric in eikonal approximation. In addition we…