Carlos Barceló

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Analogue gravity is a research programme which investigates analogues of general relativistic gravitational fields within other physical systems, typically but not exclusively condensed matter systems, with the aim of gaining new insights into their corresponding problems. Analogue models of (and for) gravity have a long and distinguished history dating(More)
Bose-Einstein condensates ͑BEC's͒ have recently been the subject of considerable study as possible analog models of general relativity. In particular it was shown that the propagation of phase perturbations in a BEC can, under certain conditions, closely mimic the dynamics of scalar quantum fields in curved space times. In two previous papers ͓Int. D ͑to be(More)
The tension, if not outright inconsistency, between quantum physics and general rela-tivity is one of the great problems facing physics at the turn of the millennium. Most often, the problems arising in merging Einstein gravity and quantum physics are viewed as Planck scale issues (10 19 GeV, 10 −34 m, 10 −45 s), and so safely beyond the reach of(More)
It is by now well known that various condensed matter systems may be used to mimic many of the kinematic aspects of general relativity, and in particular of curved-spacetime quantum field theory. In this essay we will take a look at what would be needed to mimic a cosmological spacetime — to be precise a spatially flat FRW cosmology — in one of these(More)
We sketch a particularly simple and compelling version of D-brane cosmology. Inspired by the semi-phenomenological Ž. Randall–Sundrum models, and their cosmological generalizations, we develop a variant that contains a single 3 q 1-Ž. dimensional D-brane which is located on the boundary of a single bulk 4 q 1-dimensional region. The D-brane boundary is Ž.(More)