55 citations · 134 across the 6 of their papers we have counts for
6 papers
Transformational acoustic metamaterials based on pressure gradients
C. García-Meca, S. Carloni, C. Barceló +3
We apply a homogenization process to the acoustic velocity potential wave equation. The study of various examples shows that the resulting effective properties are different from t…
Analogue transformation acoustics and the compression of spacetime
C. García-Meca, S. Carloni, C. Barceló +3
A recently developed technique known as analogue transformation acoustics has allowed the extension of the transformational paradigm to general spacetime transformations under whic…
Hybrid classical-quantum formulations ask for hybrid notions
Carlos Barceló, Raúl Carballo-Rubio, Luis J. Garay +1
We reappraise some of the hybrid classical-quantum models proposed in the literature with the goal of retrieving some of their common characteristics. In particular, first, we anal…
Hawking radiation as perceived by different observers (ERE2011 proceedings)
Luis C. Barbado, Carlos Barceló, Luis J. Garay
We study the perception of Hawking radiation by different observers outside a black hole. The analysis is done in terms of an effective-temperature function that varies along the t…
Quantum Non-Gravity and Stellar Collapse
C. Barcelo, L. J. Garay, G. Jannes
Observational indications combined with analyses of analogue and emergent gravity in condensed matter systems support the possibility that there might be two distinct energy scales…
On the impossibility of superluminal travel: the warp drive lesson
Carlos Barceló, Stefano Finazzi, Stefano Liberati
The question of whether it is possible or not to surpass the speed of light is already centennial. The special theory of relativity took the existence of a speed limit as a princip…