All Outputs (9)

Interferometric Unruh Detectors for Bose-Einstein Condensates (2020)
Journal Article
Gooding, C., Biermann, S., Erne, S., Louko, J., Unruh, W. G., Schmiedmayer, J., & Weinfurtner, S. (2020). Interferometric Unruh Detectors for Bose-Einstein Condensates. Physical Review Letters, 125(21), Article 213603. https://doi.org/10.1103/PhysRevLett.125.213603

The Unruh effect predicts a thermal response for an accelerated detector moving through the vacuum. Here we propose an interferometric scheme to observe an analogue of the circular Unruh effect using a localized laser coupled to a Bose-Einstein conde... Read More about Interferometric Unruh Detectors for Bose-Einstein Condensates.

Unruh and analogue Unruh temperatures for circular motion in 3+1 and 2+1 dimensions (2020)
Journal Article
Biermann, S., Erne, S., Gooding, C., Louko, J., Schmiedmayer, J., Unruh, W. G., & Weinfurtner, S. (2020). Unruh and analogue Unruh temperatures for circular motion in 3+1 and 2+1 dimensions. Physical Review D, 102(8), Article 085006. https://doi.org/10.1103/PhysRevD.102.085006

The Unruh effect states that a uniformly linearly accelerated observer with proper acceleration a experiences Minkowski vacuum as a thermal state in the temperature Tlin=a/(2π), operationally measurable via the detailed balance condition between exci... Read More about Unruh and analogue Unruh temperatures for circular motion in 3+1 and 2+1 dimensions.

Quasinormal Mode Oscillations in an Analogue Black Hole Experiment (2020)
Journal Article
Torres, T., Patrick, S., Richartz, M., & Weinfurtner, S. (2020). Quasinormal Mode Oscillations in an Analogue Black Hole Experiment. Physical Review Letters, 125(1), Article 011301. https://doi.org/10.1103/PhysRevLett.125.011301

The late stages of the relaxation process of a black hole are expected to depend only on its mass and angular momentum and not on the details of its formation process. Inspired by recent analogue gravity experiments, which demonstrate that certain bl... Read More about Quasinormal Mode Oscillations in an Analogue Black Hole Experiment.

New Semiclassical Picture of Vacuum Decay (2019)
Journal Article
Braden, J., Johnson, M. C., Peiris, H. V., Pontzen, A., & Weinfurtner, S. (2019). New Semiclassical Picture of Vacuum Decay. Physical Review Letters, 123(3), Article 031601. https://doi.org/10.1103/physrevlett.123.031601

© 2019 authors. Published by the American Physical Society. We introduce a new picture of vacuum decay which, in contrast to existing semiclassical techniques, provides a real-time description and does not rely on classically forbidden tunneling path... Read More about New Semiclassical Picture of Vacuum Decay.

Towards the cold atom analog false vacuum (2018)
Journal Article
Braden, J., Johnson, M. C., Peiris, H. V., & Weinfurtner, S. (2018). Towards the cold atom analog false vacuum. Journal of High Energy Physics, 2018(7), https://doi.org/10.1007/jhep07%282018%29014

Analog condensed matter systems present an exciting opportunity to simulate early Universe models in table-top experiments. We consider a recent proposal for an analog condensed matter experiment to simulate the relativistic quantum decay of the fals... Read More about Towards the cold atom analog false vacuum.

On the observation of nonclassical excitations in Bose–Einstein condensates (2016)
Journal Article
Finke, A., Jain, P., & Weinfurtner, S. (2016). On the observation of nonclassical excitations in Bose–Einstein condensates. New Journal of Physics, 18(113017), https://doi.org/10.1088/1367-2630/18/11/113017

In the recent experimental and theoretical literature well-established nonclassicality criteria from the field of quantum optics have been directly applied to the case of excitations in matter-waves. Among these are violations of Cauchy–Schwarz inequ... Read More about On the observation of nonclassical excitations in Bose–Einstein condensates.

Extrinsic curvature in two-dimensional causal dynamical triangulation (2016)
Journal Article
Glaser, L., Sotiriou, T. P., & Weinfurtner, S. (2016). Extrinsic curvature in two-dimensional causal dynamical triangulation. Physical Review D, 94(6), Article 64014. https://doi.org/10.1103/PhysRevD.94.064014

Causal dynamical triangulation (CDT) is a nonperturbative quantization of general relativity. Hořava-Lifshitz gravity, on the other hand, modifies general relativity to allow for perturbative quantization. Past work has given rise to the speculation... Read More about Extrinsic curvature in two-dimensional causal dynamical triangulation.

Rotating black holes in a draining bathtub: superradiant scattering of gravity waves (2015)
Journal Article
Richartz, M., Prain, A., Liberati, S., & Weinfurtner, S. (2015). Rotating black holes in a draining bathtub: superradiant scattering of gravity waves. Physical Review D, 91(12), Article 124018. https://doi.org/10.1103/PhysRevD.91.124018

In a draining rotating fluid flow background, surface perturbations behave as a scalar field on a rotating effective black hole spacetime. We propose a new model for the background flow which takes into account the varying depth of the water. Numeric... Read More about Rotating black holes in a draining bathtub: superradiant scattering of gravity waves.

Reducing space-time to binary information (2014)
Journal Article
Weinfurtner, S., De las Cuevas, G., Martin-Delgado, M. A., & Briegel, H. J. (2014). Reducing space-time to binary information. Journal of Physics A: Mathematical and Theoretical, 47(9), Article 095301. https://doi.org/10.1088/1751-8113/47/9/095301

We present a new description of discrete space-time in 1+1 dimensions in terms of a set of elementary geometrical units that represent its independent classical degrees of freedom. This is achieved by means of a binary encoding that is ergodic in the... Read More about Reducing space-time to binary information.