Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Signature-Change Events, Trans-Planckian Physics and Quasi-Particle Amplification in Bose-Einstein Condensates

Open Access Open Access

Abstract

We explore signature-changing emergent geometries in a BEC; specifically analogues of signature change from Euclidean to Lorentzian regions. In our BEC-based analogue model, signature change is achieved via a change in atomic interactions from repulsive to attractive. The particle production resulting from a finite-duration Euclidean-signature event is calculated firstly in the hydrodynamic limit. A combination of trans-Planckian physics and signature change results from the inclusion of ultraviolet modes, modifying the expected particle production. We also propose using analogue signature changing events as an amplifier for analogue “cosmological particle production and investigate the experimental applicability of this in future BEC experiments. Article not available.

© 2007 Optical Society of America


More Like This
Signature-Change Events, Trans-Planckian Physics and Quasi-Particle Amplification in Bose-Einstein Condensates

Angela White, Silke Weinfurtner, Matt Visser, and Craig Savage
QME37 Quantum-Atom Optics Downunder (QAO) 2007

Many-body effects in the dynamics of Bose-Einstein condensates

Thomas Ernst, Tobias Paul, Peter Schlagheck, and Joachim Brand
QME15 Quantum-Atom Optics Downunder (QAO) 2007

Macroscopic Self Trapping in the Dynamical Tunneling of a Bose-Einstein Condensate

S. Wüster, B. J. Dąbrowska-Wüster, S. Holt, and M. J. Davis
QWE29 Quantum-Atom Optics Downunder (QAO) 2007

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved