140 citations · 224 across the 5 of their papers we have counts for
5 papers
Emergent spacetimes
Silke Weinfurtner
We discuss the possibility that spacetime geometry may be an emergent phenomenon. This idea has been motivated by the Analogue Gravity programme. These are systems where the kinema…
Analogue model of a FRW universe in Bose-Einstein condensates: Application of the classical field method
Piyush Jain, Silke Weinfurtner, Matt Visser +1
Analogue models of gravity have been motivated by the possibility of investigating phenomena not readily accessible in their cosmological counterparts. In this paper, we investigat…
Trans-Planckian physics and signature change events in Bose gas hydrodynamics
Silke Weinfurtner, Angela White, Matt Visser
We present an example of emergent spacetime as the hydrodynamic limit of a more fundamental microscopic theory. The low-energy, long-wavelength limit in our model is dominated by c…
Effective refractive index tensor for weak field gravity
Petarpa Boonserm, Celine Cattoen, Tristan Faber +2
Gravitational lensing in a weak but otherwise arbitrary gravitational field can be described in terms of a 3 x 3 tensor, the "effective refractive index". If the sources generating…
Massive phonon modes from a BEC-based analog model
Matt Visser, Silke Weinfurtner
Two-component BECs subject to laser-induced coupling exhibit a complicated spectrum of excitations, which can be viewed as two interacting phonon modes. We study the conditions req…