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Analogue Gravity
Analogue gravity is a research programme which investigates analogues of general relativistic gravitational fields within other physical systems, typically but not exclusively condensed matterExpand
Analogue Gravity
Analogue models of (and for) gravity have a long and distinguished history dating back to the earliest years of general relativity. In this review article we will discuss the history, aims, results,Expand
TWILIGHT FOR THE ENERGY CONDITIONS
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, the problems arisingExpand
TRAVERSABLE WORMHOLES FROM MASSLESS CONFORMALLY COUPLED SCALAR FIELDS
The massless conformally coupled scalar field is characterized by the so-called “new improved stress-energy tensor”, which is capable of classically violating the null energy condition. When coupledExpand
Fate of gravitational collapse in semiclassical gravity
While the outcome of gravitational collapse in classical general relativity is unquestionably a black hole, up to now no full and complete semiclassical description of black hole formation has beenExpand
Scalar fields, energy conditions and traversable wormholes
We describe the different possibilities that a simple and apparently quite harmless classical scalar field theory provides to violate the energy conditions. We demonstrate that a non-minimallyExpand
ANALOGUE MODELS FOR FRW COSMOLOGIES
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. InExpand
Hawking-like radiation from evolving black holes and compact horizonless objects
Usually, Hawking radiation is derived assuming (i) that a future eternal event horizon forms, and (ii) that the subsequent exterior geometry is static. However, one may be interested in eitherExpand
Minimal conditions for the existence of a Hawking-like flux
We investigate the minimal conditions that an asymptotically flat general relativistic spacetime must satisfy in order for a Hawking-like Planckian flux of particles to arrive at future nullExpand
Brane surgery: Energy conditions, traversable wormholes, and voids
Abstract Branes are ubiquitous elements of any low-energy limit of string theory. We point out that negative tension branes violate all the standard energy conditions of the higher-dimensionalExpand
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