English

# Item

ITEM ACTIONSEXPORT

Released

Journal Article

#### Planck-scale dual-curvature lensing and spacetime noncommutativity

##### MPS-Authors

Bianco,  Stefano
AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

##### External Ressource
No external resources are shared
##### Fulltext (public)

1708.02429.pdf
(Preprint), 149KB

6075920.pdf
(Publisher version), 2MB

##### Supplementary Material (public)
There is no public supplementary material available
##### Citation

Amelino-Camelia, G., Barcaroli, L., Bianco, S., & Pensato, L. (2017). Planck-scale dual-curvature lensing and spacetime noncommutativity. Advances in High Energy Physics, 2017: 6075920. doi:10.1155/2017/6075920.

Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-DB2C-3
##### Abstract
It was recently realized that Planck-scale momentum-space curvature, which is expected in some approaches to the quantum-gravity problem, can produce dual-curvature lensing, a feature which mainly affects the direction of observation of particles emitted by very distant sources. Several gray areas remain in our understanding of dual-curvature lensing, including the possibility that it might be just a coordinate artifact and the possibility that it might be in some sense a by product of the better studied dual-curvature redshift. We stress that data reported by the IceCube neutrino telescope should motivate a more vigorous effort of investigation of dual-curvature lensing, and we observe that studies of the recently proposed "$\rho$-Minkowski noncommutative spacetime" could be valuable from this perspective. Through a dedicated $\rho$-Minkowski analysis, we show that dual-curvature lensing is not merely a coordinate artifact and that it can be present even in theories without dual-curvature redshift.